{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-47685", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-30T16:00:12.941Z", "datePublished": "2024-10-21T11:53:26.486Z", "dateUpdated": "2026-05-12T11:58:11.897Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:38:46.996Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()\n\nsyzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending\ngarbage on the four reserved tcp bits (th->res1)\n\nUse skb_put_zero() to clear the whole TCP header,\nas done in nf_reject_ip_tcphdr_put()\n\nBUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core net/core/dev.c:5661 [inline]\n __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775\n process_backlog+0x4ad/0xa50 net/core/dev.c:6108\n __napi_poll+0xe7/0x980 net/core/dev.c:6772\n napi_poll net/core/dev.c:6841 [inline]\n net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963\n handle_softirqs+0x1ce/0x800 kernel/softirq.c:554\n __do_softirq+0x14/0x1a kernel/softirq.c:588\n do_softirq+0x9a/0x100 kernel/softirq.c:455\n __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382\n local_bh_enable include/linux/bottom_half.h:33 [inline]\n rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]\n __dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450\n dev_queue_xmit include/linux/netdevice.h:3105 [inline]\n neigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565\n neigh_output include/net/neighbour.h:542 [inline]\n ip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141\n __ip6_finish_output net/ipv6/ip6_output.c:215 [inline]\n ip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226\n NF_HOOK_COND include/linux/netfilter.h:303 [inline]\n ip6_output+0x356/0x620 net/ipv6/ip6_output.c:247\n dst_output include/net/dst.h:450 [inline]\n NF_HOOK include/linux/netfilter.h:314 [inline]\n ip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366\n inet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135\n __tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466\n tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]\n tcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143\n tcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333\n __inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679\n inet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750\n __sys_connect_file net/socket.c:2061 [inline]\n __sys_connect+0x606/0x690 net/socket.c:2078\n __do_sys_connect net/socket.c:2088 [inline]\n __se_sys_connect net/socket.c:2085 [inline]\n __x64_sys_connect+0x91/0xe0 net/socket.c:2085\n x64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was stored to memory at:\n nf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/netfilter/nf_reject_ipv6.c"], "versions": [{"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "872eca64c3267dbc5836b715716fc6c03a18eda7", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7bcbc4cda777d26c88500d973fad0d497fc8a82e", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "af4b8a704f26f38310655bad67fd8096293275a2", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7a7b5a27c53b55e91eecf646d1b204e73fa4af93", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "10210658f827ad45061581cbfc05924b723e8922", "status": "affected", "versionType": "git"}, {"version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "9c778fe48d20ef362047e3376dee56d77f8500d4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/netfilter/nf_reject_ipv6.c"], "versions": [{"version": "3.18", "status": "affected"}, {"version": "0", "lessThan": "3.18", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.227", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.168", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.113", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.54", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.13", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.2", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "4.19.323"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.4.285"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.10.227"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.1.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.6.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.10.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.11.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/872eca64c3267dbc5836b715716fc6c03a18eda7"}, {"url": "https://git.kernel.org/stable/c/7bcbc4cda777d26c88500d973fad0d497fc8a82e"}, {"url": "https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5"}, {"url": "https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd"}, {"url": "https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2"}, {"url": "https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2"}, {"url": "https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93"}, {"url": "https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922"}, {"url": "https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4"}], "title": "netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-47685", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-21T13:06:45.955918Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T13:14:16.073Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:20:52.270Z"}}, {"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T11:58:11.897Z"}, "affected": [{"vendor": "Siemens", "product": "RUGGEDCOM RST2428P", "versions": [{"status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family", "versions": [{"status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family", "versions": [{"status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-47685", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-21T13:06:45.955918Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T13:06:49.245Z"}}], "cna": {"title": "netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "872eca64c3267dbc5836b715716fc6c03a18eda7", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7bcbc4cda777d26c88500d973fad0d497fc8a82e", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "af4b8a704f26f38310655bad67fd8096293275a2", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "7a7b5a27c53b55e91eecf646d1b204e73fa4af93", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "10210658f827ad45061581cbfc05924b723e8922", "versionType": "git"}, {"status": "affected", "version": "c8d7b98bec43faaa6583c3135030be5eb4693acb", "lessThan": "9c778fe48d20ef362047e3376dee56d77f8500d4", "versionType": "git"}], "programFiles": ["net/ipv6/netfilter/nf_reject_ipv6.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.18"}, {"status": "unaffected", "version": "0", "lessThan": "3.18", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.323", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.285", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.227", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.168", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.113", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.54", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.10.13", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11.2", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/ipv6/netfilter/nf_reject_ipv6.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/872eca64c3267dbc5836b715716fc6c03a18eda7"}, {"url": "https://git.kernel.org/stable/c/7bcbc4cda777d26c88500d973fad0d497fc8a82e"}, {"url": "https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5"}, {"url": "https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd"}, {"url": "https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2"}, {"url": "https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2"}, {"url": "https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93"}, {"url": "https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922"}, {"url": "https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()\n\nsyzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending\ngarbage on the four reserved tcp bits (th->res1)\n\nUse skb_put_zero() to clear the whole TCP header,\nas done in nf_reject_ip_tcphdr_put()\n\nBUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core net/core/dev.c:5661 [inline]\n __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775\n process_backlog+0x4ad/0xa50 net/core/dev.c:6108\n __napi_poll+0xe7/0x980 net/core/dev.c:6772\n napi_poll net/core/dev.c:6841 [inline]\n net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963\n handle_softirqs+0x1ce/0x800 kernel/softirq.c:554\n __do_softirq+0x14/0x1a kernel/softirq.c:588\n do_softirq+0x9a/0x100 kernel/softirq.c:455\n __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382\n local_bh_enable include/linux/bottom_half.h:33 [inline]\n rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]\n __dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450\n dev_queue_xmit include/linux/netdevice.h:3105 [inline]\n neigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565\n neigh_output include/net/neighbour.h:542 [inline]\n ip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141\n __ip6_finish_output net/ipv6/ip6_output.c:215 [inline]\n ip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226\n NF_HOOK_COND include/linux/netfilter.h:303 [inline]\n ip6_output+0x356/0x620 net/ipv6/ip6_output.c:247\n dst_output include/net/dst.h:450 [inline]\n NF_HOOK include/linux/netfilter.h:314 [inline]\n ip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366\n inet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135\n __tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466\n tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]\n tcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143\n tcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333\n __inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679\n inet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750\n __sys_connect_file net/socket.c:2061 [inline]\n __sys_connect+0x606/0x690 net/socket.c:2078\n __do_sys_connect net/socket.c:2088 [inline]\n __se_sys_connect net/socket.c:2085 [inline]\n __x64_sys_connect+0x91/0xe0 net/socket.c:2085\n x64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was stored to memory at:\n nf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core\n---truncated---"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.323", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.285", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.227", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.168", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.113", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.54", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10.13", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.2", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "3.18"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:37:14.167Z"}}}, "cveMetadata": {"cveId": "CVE-2024-47685", "state": "PUBLISHED", "dateUpdated": "2025-05-04T09:37:14.167Z", "dateReserved": "2024-09-30T16:00:12.941Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T11:53:26.486Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4CF15846-AEEF-4FBF-BED3-18AFD682270F", "versionEndExcluding": "4.19.323", "versionStartIncluding": "3.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B5A89369-320F-47FC-8695-56F61F87E4C0", "versionEndExcluding": "5.4.285", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "795A3EE6-0CAB-4409-A903-151C94ACECC0", "versionEndExcluding": "5.10.227", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4D51C05D-455B-4D8D-89E7-A58E140B864C", "versionEndExcluding": "5.15.168", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D01BD22E-ACD1-4618-9D01-6116570BE1EE", "versionEndExcluding": "6.1.113", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D448821D-C085-4CAF-88FA-2DDE7BE21976", "versionEndExcluding": "6.6.54", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CE94BB8D-B0AB-4563-9ED7-A12122B56EBE", "versionEndExcluding": "6.10.13", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB755D26-97F4-43B6-8604-CD076811E181", "versionEndExcluding": "6.11.2", "versionStartIncluding": "6.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()\n\nsyzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending\ngarbage on the four reserved tcp bits (th->res1)\n\nUse skb_put_zero() to clear the whole TCP header,\nas done in nf_reject_ip_tcphdr_put()\n\nBUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core net/core/dev.c:5661 [inline]\n __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775\n process_backlog+0x4ad/0xa50 net/core/dev.c:6108\n __napi_poll+0xe7/0x980 net/core/dev.c:6772\n napi_poll net/core/dev.c:6841 [inline]\n net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963\n handle_softirqs+0x1ce/0x800 kernel/softirq.c:554\n __do_softirq+0x14/0x1a kernel/softirq.c:588\n do_softirq+0x9a/0x100 kernel/softirq.c:455\n __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382\n local_bh_enable include/linux/bottom_half.h:33 [inline]\n rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]\n __dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450\n dev_queue_xmit include/linux/netdevice.h:3105 [inline]\n neigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565\n neigh_output include/net/neighbour.h:542 [inline]\n ip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141\n __ip6_finish_output net/ipv6/ip6_output.c:215 [inline]\n ip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226\n NF_HOOK_COND include/linux/netfilter.h:303 [inline]\n ip6_output+0x356/0x620 net/ipv6/ip6_output.c:247\n dst_output include/net/dst.h:450 [inline]\n NF_HOOK include/linux/netfilter.h:314 [inline]\n ip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366\n inet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135\n __tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466\n tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]\n tcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143\n tcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333\n __inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679\n inet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750\n __sys_connect_file net/socket.c:2061 [inline]\n __sys_connect+0x606/0x690 net/socket.c:2078\n __do_sys_connect net/socket.c:2088 [inline]\n __se_sys_connect net/socket.c:2085 [inline]\n __x64_sys_connect+0x91/0xe0 net/socket.c:2085\n x64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was stored to memory at:\n nf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249\n nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\n nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\n expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\n nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\n nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK include/linux/netfilter.h:312 [inline]\n ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n __netif_receive_skb_one_core\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_reject_ipv6: correcci\u00f3n de nf_reject_ip6_tcphdr_put() syzbot inform\u00f3 que nf_reject_ip6_tcphdr_put() posiblemente estaba enviando basura en los cuatro bits tcp reservados (th->res1) Utilice skb_put_zero() para borrar todo el encabezado TCP, como se hace en nf_reject_ip_tcphdr_put() ERROR: KMSAN: valor no inicializado en nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 evaluaci\u00f3n_operaciones_llamada_expr net/netfilter/nf_tables_core.c:240 [en l\u00ednea] nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn incluye/linux/netfilter.h:154 [en l\u00ednea] nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 nf_hook incluye/linux/netfilter.h:269 [en l\u00ednea] NF_HOOK incluye/linux/netfilter.h:312 [en l\u00ednea] ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5661 [en l\u00ednea] __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 process_backlog+0x4ad/0xa50 net/core/dev.c:6108 __napi_poll+0xe7/0x980 net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [en l\u00ednea] net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 __do_softirq+0x14/0x1a kernel/softirq.c:588 do_softirq+0x9a/0x100 kernel/softirq.c:455 __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [en l\u00ednea] rcu_read_unlock_bh incluir/linux/rcupdate.h:908 [en l\u00ednea] __dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450 dev_queue_xmit incluir/linux/netdevice.h:3105 [en l\u00ednea] neigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565 neigh_output incluir/net/neighbour.h:542 [en l\u00ednea] ip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:215 [en l\u00ednea] ip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226 NF_HOOK_COND incluye/linux/netfilter.h:303 [en l\u00ednea] ip6_output+0x356/0x620 net/ipv6/ip6_output.c:247 dst_output incluye/net/dst.h:450 [en l\u00ednea] NF_HOOK incluye/linux/netfilter.h:314 [en l\u00ednea] ip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366 inet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135 __tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [en l\u00ednea] tcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143 tcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333 __inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679 inet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750 __sys_connect_file net/socket.c:2061 [en l\u00ednea] __sys_connect+0x606/0x690 net/socket.c:2078 __do_sys_connect net/socket.c:2088 [en l\u00ednea] __se_sys_connect net/socket.c:2085 [en l\u00ednea] __x64_sys_connect+0x91/0xe0 net/socket.c:2085 x64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se almacen\u00f3 en la memoria en: nf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249 nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 evaluaci\u00f3n_operaciones_llamada_expr net/netfilter/nf_tables_core.c:240 [en l\u00ednea] nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn incluye/linux/netfilter.h:154 [en l\u00ednea] nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 nf_hook incluye/linux/netfilter.h:269 [en l\u00ednea] NF_HOOK incluye/linux/netfilter.h:312 [en l\u00ednea] ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core ---truncado---"}], "id": "CVE-2024-47685", "lastModified": "2026-05-12T12:17:13.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-10-21T12:15:05.397", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7bcbc4cda777d26c88500d973fad0d497fc8a82e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/872eca64c3267dbc5836b715716fc6c03a18eda7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()", "id": "2320268", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320268"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()\nsyzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending\ngarbage on the four reserved tcp bits (th->res1)\nUse skb_put_zero() to clear the whole TCP header,\nas done in nf_reject_ip_tcphdr_put()\nBUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\nnf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255\nnf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\nnft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\nexpr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\nnft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\nnft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\nnf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\nnf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\nnf_hook include/linux/netfilter.h:269 [inline]\nNF_HOOK include/linux/netfilter.h:312 [inline]\nipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n__netif_receive_skb_one_core net/core/dev.c:5661 [inline]\n__netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775\nprocess_backlog+0x4ad/0xa50 net/core/dev.c:6108\n__napi_poll+0xe7/0x980 net/core/dev.c:6772\nnapi_poll net/core/dev.c:6841 [inline]\nnet_rx_action+0xa5a/0x19b0 net/core/dev.c:6963\nhandle_softirqs+0x1ce/0x800 kernel/softirq.c:554\n__do_softirq+0x14/0x1a kernel/softirq.c:588\ndo_softirq+0x9a/0x100 kernel/softirq.c:455\n__local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382\nlocal_bh_enable include/linux/bottom_half.h:33 [inline]\nrcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]\n__dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450\ndev_queue_xmit include/linux/netdevice.h:3105 [inline]\nneigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565\nneigh_output include/net/neighbour.h:542 [inline]\nip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141\n__ip6_finish_output net/ipv6/ip6_output.c:215 [inline]\nip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226\nNF_HOOK_COND include/linux/netfilter.h:303 [inline]\nip6_output+0x356/0x620 net/ipv6/ip6_output.c:247\ndst_output include/net/dst.h:450 [inline]\nNF_HOOK include/linux/netfilter.h:314 [inline]\nip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366\ninet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135\n__tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466\ntcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]\ntcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143\ntcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333\n__inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679\ninet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750\n__sys_connect_file net/socket.c:2061 [inline]\n__sys_connect+0x606/0x690 net/socket.c:2078\n__do_sys_connect net/socket.c:2088 [inline]\n__se_sys_connect net/socket.c:2085 [inline]\n__x64_sys_connect+0x91/0xe0 net/socket.c:2085\nx64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nUninit was stored to memory at:\nnf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249\nnf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344\nnft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48\nexpr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]\nnft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288\nnft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161\nnf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\nnf_hook_slow+0xf4/0x400 net/netfilter/core.c:626\nnf_hook include/linux/netfilter.h:269 [inline]\nNF_HOOK include/linux/netfilter.h:312 [inline]\nipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310\n__netif_receive_skb_one_core\n---truncated---", "A flaw was found in the Netfilter and IPV6 functionality in the Linux kernel leading to a leak of 4 random bits. This issue may allow a remote user to preform an unauthorized read of random bits from the server."], "mitigation": {"lang": "en:us", "value": "If IPV6 or netfilter is not being used, then the issue is not applicable.\nIn order to trigger this issue, the local user needs to enable Netfilter and IPV6 (that requires the ability to create user/net namespaces).\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\n# echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as this functionality needs to be enabled."}, "name": "CVE-2024-47685", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-47685\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-47685\nhttps://lore.kernel.org/linux-cve-announce/2024102109-CVE-2024-47685-af1e@gregkh/T"], "statement": "This issue is considered to be a moderate impact flaw, as the leaked data is a tcp stack and not the whole kernel. It does not seem to affect the availability. A remote user can potentially read 4 bits of random data from the server memory, but has no control of what is in the 4 bits and cannot bring any harm to the server from it.", "threat_severity": "Moderate"}

{}