{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54112", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T13:02:52.518Z", "datePublished": "2025-12-24T13:06:34.854Z", "dateUpdated": "2026-05-11T19:55:42.470Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:55:42.470Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: Fix memory leak in error path of kcm_sendmsg()\n\nsyzbot reported a memory leak like below:\n\nBUG: memory leak\nunreferenced object 0xffff88810b088c00 (size 240):\n comm \"syz-executor186\", pid 5012, jiffies 4294943306 (age 13.680s)\n hex dump (first 32 bytes):\n 00 89 08 0b 81 88 ff ff 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<ffffffff83e5d5ff>] __alloc_skb+0x1ef/0x230 net/core/skbuff.c:634\n [<ffffffff84606e59>] alloc_skb include/linux/skbuff.h:1289 [inline]\n [<ffffffff84606e59>] kcm_sendmsg+0x269/0x1050 net/kcm/kcmsock.c:815\n [<ffffffff83e479c6>] sock_sendmsg_nosec net/socket.c:725 [inline]\n [<ffffffff83e479c6>] sock_sendmsg+0x56/0xb0 net/socket.c:748\n [<ffffffff83e47f55>] ____sys_sendmsg+0x365/0x470 net/socket.c:2494\n [<ffffffff83e4c389>] ___sys_sendmsg+0xc9/0x130 net/socket.c:2548\n [<ffffffff83e4c536>] __sys_sendmsg+0xa6/0x120 net/socket.c:2577\n [<ffffffff84ad7bb8>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n [<ffffffff84ad7bb8>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80\n [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIn kcm_sendmsg(), kcm_tx_msg(head)->last_skb is used as a cursor to append\nnewly allocated skbs to 'head'. If some bytes are copied, an error occurred,\nand jumped to out_error label, 'last_skb' is left unmodified. A later\nkcm_sendmsg() will use an obsoleted 'last_skb' reference, corrupting the\n'head' frag_list and causing the leak.\n\nThis patch fixes this issue by properly updating the last allocated skb in\n'last_skb'."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/kcm/kcmsock.c"], "versions": [{"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "8dc7eb757b1652b82725f32e0c89a1e9f6c0e13b", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "5e5554389397e98fafb9efe395d8b4830dd5f042", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "479c71cda14b3c3a6515773faa39055333eaa2b7", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "33db24ad811b3576a0c2f8862506763f2be925b0", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "97275339c34cfbccd65e87bc38fd910ae66c48ba", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "16989de75497574b5fafd174c0c233d5a86858b7", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "af8085e0fc3207ecbf8b9e7a635c790e36d058c6", "status": "affected", "versionType": "git"}, {"version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "c821a88bd720b0046433173185fd841a100d44ad", "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/kcm/kcmsock.c"], "versions": [{"version": "4.6", "status": "affected"}, {"version": "0", "lessThan": "4.6", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.326", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.295", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.257", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.195", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.132", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.54", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "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": "4.6", "versionEndExcluding": "4.14.326"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "4.19.295"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.4.257"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.10.195"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.15.132"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.1.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.5.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8dc7eb757b1652b82725f32e0c89a1e9f6c0e13b"}, {"url": "https://git.kernel.org/stable/c/5e5554389397e98fafb9efe395d8b4830dd5f042"}, {"url": "https://git.kernel.org/stable/c/479c71cda14b3c3a6515773faa39055333eaa2b7"}, {"url": "https://git.kernel.org/stable/c/33db24ad811b3576a0c2f8862506763f2be925b0"}, {"url": "https://git.kernel.org/stable/c/97275339c34cfbccd65e87bc38fd910ae66c48ba"}, {"url": "https://git.kernel.org/stable/c/16989de75497574b5fafd174c0c233d5a86858b7"}, {"url": "https://git.kernel.org/stable/c/af8085e0fc3207ecbf8b9e7a635c790e36d058c6"}, {"url": "https://git.kernel.org/stable/c/c821a88bd720b0046433173185fd841a100d44ad"}], "title": "kcm: Fix memory leak in error path of kcm_sendmsg()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: Fix memory leak in error path of kcm_sendmsg()\n\nsyzbot reported a memory leak like below:\n\nBUG: memory leak\nunreferenced object 0xffff88810b088c00 (size 240):\n comm \"syz-executor186\", pid 5012, jiffies 4294943306 (age 13.680s)\n hex dump (first 32 bytes):\n 00 89 08 0b 81 88 ff ff 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<ffffffff83e5d5ff>] __alloc_skb+0x1ef/0x230 net/core/skbuff.c:634\n [<ffffffff84606e59>] alloc_skb include/linux/skbuff.h:1289 [inline]\n [<ffffffff84606e59>] kcm_sendmsg+0x269/0x1050 net/kcm/kcmsock.c:815\n [<ffffffff83e479c6>] sock_sendmsg_nosec net/socket.c:725 [inline]\n [<ffffffff83e479c6>] sock_sendmsg+0x56/0xb0 net/socket.c:748\n [<ffffffff83e47f55>] ____sys_sendmsg+0x365/0x470 net/socket.c:2494\n [<ffffffff83e4c389>] ___sys_sendmsg+0xc9/0x130 net/socket.c:2548\n [<ffffffff83e4c536>] __sys_sendmsg+0xa6/0x120 net/socket.c:2577\n [<ffffffff84ad7bb8>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n [<ffffffff84ad7bb8>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80\n [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIn kcm_sendmsg(), kcm_tx_msg(head)->last_skb is used as a cursor to append\nnewly allocated skbs to 'head'. If some bytes are copied, an error occurred,\nand jumped to out_error label, 'last_skb' is left unmodified. A later\nkcm_sendmsg() will use an obsoleted 'last_skb' reference, corrupting the\n'head' frag_list and causing the leak.\n\nThis patch fixes this issue by properly updating the last allocated skb in\n'last_skb'."}], "id": "CVE-2023-54112", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-24T13:16:13.103", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/16989de75497574b5fafd174c0c233d5a86858b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/33db24ad811b3576a0c2f8862506763f2be925b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/479c71cda14b3c3a6515773faa39055333eaa2b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e5554389397e98fafb9efe395d8b4830dd5f042"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8dc7eb757b1652b82725f32e0c89a1e9f6c0e13b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/97275339c34cfbccd65e87bc38fd910ae66c48ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af8085e0fc3207ecbf8b9e7a635c790e36d058c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c821a88bd720b0046433173185fd841a100d44ad"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: kcm: Fix memory leak in error path of kcm_sendmsg()", "id": "2425118", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2425118"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2023-54112", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54112\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54112\nhttps://lore.kernel.org/linux-cve-announce/2025122413-CVE-2023-54112-71f7@gregkh/T"]}

{}