{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53121", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-02T15:51:43.555Z", "datePublished": "2025-05-02T15:55:58.123Z", "dateUpdated": "2026-05-11T19:38:55.282Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:38:55.282Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: tcp_make_synack() can be called from process context\n\ntcp_rtx_synack() now could be called in process context as explained in\n0a375c822497 (\"tcp: tcp_rtx_synack() can be called from process\ncontext\").\n\ntcp_rtx_synack() might call tcp_make_synack(), which will touch per-CPU\nvariables with preemption enabled. This causes the following BUG:\n\n BUG: using __this_cpu_add() in preemptible [00000000] code: ThriftIO1/5464\n caller is tcp_make_synack+0x841/0xac0\n Call Trace:\n <TASK>\n dump_stack_lvl+0x10d/0x1a0\n check_preemption_disabled+0x104/0x110\n tcp_make_synack+0x841/0xac0\n tcp_v6_send_synack+0x5c/0x450\n tcp_rtx_synack+0xeb/0x1f0\n inet_rtx_syn_ack+0x34/0x60\n tcp_check_req+0x3af/0x9e0\n tcp_rcv_state_process+0x59b/0x2030\n tcp_v6_do_rcv+0x5f5/0x700\n release_sock+0x3a/0xf0\n tcp_sendmsg+0x33/0x40\n ____sys_sendmsg+0x2f2/0x490\n __sys_sendmsg+0x184/0x230\n do_syscall_64+0x3d/0x90\n\nAvoid calling __TCP_INC_STATS() with will touch per-cpu variables. Use\nTCP_INC_STATS() which is safe to be called from context switch."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/tcp_output.c"], "versions": [{"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "d493d4fe88195a144d6a277a90062a7534ed2192", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "e23ca307745be3df7fe9762f3e2a7e311a57852e", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "442aa78ed70188b21ccd8669738448702c0a3281", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "77ad58bca0119e8cc3e0e9d91a3f22caa66e4dfa", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "ad07290d63ff6689f50565b02f5b6f34ec15a5ca", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "9180aa4622a720b433e842b4d3aa34d73eec577a", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "7613cde8c0c1f02a7ec2e1d536c01b65b135fc1c", "status": "affected", "versionType": "git"}, {"version": "8336886f786fdacbc19b719c1f7ea91eb70706d4", "lessThan": "bced3f7db95ff2e6ca29dc4d1c9751ab5e736a09", "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/ipv4/tcp_output.c"], "versions": [{"version": "3.7", "status": "affected"}, {"version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.311", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.279", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.238", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.176", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.104", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.21", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.8", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "3.7", "versionEndExcluding": "4.14.311"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "4.19.279"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.4.238"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d493d4fe88195a144d6a277a90062a7534ed2192"}, {"url": "https://git.kernel.org/stable/c/e23ca307745be3df7fe9762f3e2a7e311a57852e"}, {"url": "https://git.kernel.org/stable/c/442aa78ed70188b21ccd8669738448702c0a3281"}, {"url": "https://git.kernel.org/stable/c/77ad58bca0119e8cc3e0e9d91a3f22caa66e4dfa"}, {"url": "https://git.kernel.org/stable/c/ad07290d63ff6689f50565b02f5b6f34ec15a5ca"}, {"url": "https://git.kernel.org/stable/c/9180aa4622a720b433e842b4d3aa34d73eec577a"}, {"url": "https://git.kernel.org/stable/c/7613cde8c0c1f02a7ec2e1d536c01b65b135fc1c"}, {"url": "https://git.kernel.org/stable/c/bced3f7db95ff2e6ca29dc4d1c9751ab5e736a09"}], "title": "tcp: tcp_make_synack() can be called from process context", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A6ED4957-DD82-42CD-B19D-5D932A8F252D", "versionEndExcluding": "4.14.311", "versionStartIncluding": "3.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E21A6F0-EF6A-4BB1-BEC0-09275FA55481", "versionEndExcluding": "4.19.279", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5FF05A65-6B32-4A9C-905D-6E0F17C6803B", "versionEndExcluding": "5.4.238", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DA7FEF3-FE10-4D78-94E4-BDCDA7371DD5", "versionEndExcluding": "5.10.176", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EB8A3D70-3EE1-4B1C-8A21-21CA7356DCA7", "versionEndExcluding": "5.15.104", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1F1CA6A9-8F4D-408D-9116-868EC067DCD9", "versionEndExcluding": "6.1.21", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4011EC6B-7786-4709-B765-186FA31D6F7F", "versionEndExcluding": "6.2.8", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*", "matchCriteriaId": "B8E3B0E8-FA27-4305-87BB-AF6C25B160CB", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*", "matchCriteriaId": "A47F0FC3-CE52-4BA1-BA51-22F783938431", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: tcp_make_synack() can be called from process context\n\ntcp_rtx_synack() now could be called in process context as explained in\n0a375c822497 (\"tcp: tcp_rtx_synack() can be called from process\ncontext\").\n\ntcp_rtx_synack() might call tcp_make_synack(), which will touch per-CPU\nvariables with preemption enabled. This causes the following BUG:\n\n BUG: using __this_cpu_add() in preemptible [00000000] code: ThriftIO1/5464\n caller is tcp_make_synack+0x841/0xac0\n Call Trace:\n <TASK>\n dump_stack_lvl+0x10d/0x1a0\n check_preemption_disabled+0x104/0x110\n tcp_make_synack+0x841/0xac0\n tcp_v6_send_synack+0x5c/0x450\n tcp_rtx_synack+0xeb/0x1f0\n inet_rtx_syn_ack+0x34/0x60\n tcp_check_req+0x3af/0x9e0\n tcp_rcv_state_process+0x59b/0x2030\n tcp_v6_do_rcv+0x5f5/0x700\n release_sock+0x3a/0xf0\n tcp_sendmsg+0x33/0x40\n ____sys_sendmsg+0x2f2/0x490\n __sys_sendmsg+0x184/0x230\n do_syscall_64+0x3d/0x90\n\nAvoid calling __TCP_INC_STATS() with will touch per-cpu variables. Use\nTCP_INC_STATS() which is safe to be called from context switch."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tcp: tcp_make_synack() se puede llamar desde el contexto del proceso. tcp_rtx_synack() ahora se puede llamar en el contexto del proceso como se explica en 0a375c822497 (\"tcp: tcp_rtx_synack() se puede llamar desde el contexto del proceso\"). tcp_rtx_synack() podr\u00eda llamar a tcp_make_synack(), que tocar\u00e1 las variables por CPU con la preempci\u00f3n habilitada. Esto provoca el siguiente ERROR: ERROR: uso de __this_cpu_add() en c\u00f3digo preemptible [00000000]: El llamador de ThriftIO1/5464 es tcp_make_synack+0x841/0xac0 Rastreo de llamadas: dump_stack_lvl+0x10d/0x1a0 check_preemption_disabled+0x104/0x110 tcp_make_synack+0x841/0xac0 tcp_v6_send_synack+0x5c/0x450 tcp_rtx_synack+0xeb/0x1f0 inet_rtx_syn_ack+0x34/0x60 tcp_check_req+0x3af/0x9e0 tcp_rcv_state_process+0x59b/0x2030 tcp_v6_do_rcv+0x5f5/0x700 release_sock+0x3a/0xf0 tcp_sendmsg+0x33/0x40 ____sys_sendmsg+0x2f2/0x490 __sys_sendmsg+0x184/0x230 do_syscall_64+0x3d/0x90 Evite llamar a __TCP_INC_STATS(), ya que afectar\u00e1 las variables por CPU. Use TCP_INC_STATS(), que se puede llamar de forma segura desde un cambio de contexto."}], "id": "CVE-2023-53121", "lastModified": "2025-11-10T17:50:22.173", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-05-02T16:15:31.173", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/442aa78ed70188b21ccd8669738448702c0a3281"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7613cde8c0c1f02a7ec2e1d536c01b65b135fc1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/77ad58bca0119e8cc3e0e9d91a3f22caa66e4dfa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9180aa4622a720b433e842b4d3aa34d73eec577a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad07290d63ff6689f50565b02f5b6f34ec15a5ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bced3f7db95ff2e6ca29dc4d1c9751ab5e736a09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d493d4fe88195a144d6a277a90062a7534ed2192"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e23ca307745be3df7fe9762f3e2a7e311a57852e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2023:6583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}], "bugzilla": {"description": "kernel: tcp: tcp_make_synack() can be called from process context", "id": "2363691", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363691"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntcp: tcp_make_synack() can be called from process context\ntcp_rtx_synack() now could be called in process context as explained in\n0a375c822497 (\"tcp: tcp_rtx_synack() can be called from process\ncontext\").\ntcp_rtx_synack() might call tcp_make_synack(), which will touch per-CPU\nvariables with preemption enabled. This causes the following BUG:\nBUG: using __this_cpu_add() in preemptible [00000000] code: ThriftIO1/5464\ncaller is tcp_make_synack+0x841/0xac0\nCall Trace:\n<TASK>\ndump_stack_lvl+0x10d/0x1a0\ncheck_preemption_disabled+0x104/0x110\ntcp_make_synack+0x841/0xac0\ntcp_v6_send_synack+0x5c/0x450\ntcp_rtx_synack+0xeb/0x1f0\ninet_rtx_syn_ack+0x34/0x60\ntcp_check_req+0x3af/0x9e0\ntcp_rcv_state_process+0x59b/0x2030\ntcp_v6_do_rcv+0x5f5/0x700\nrelease_sock+0x3a/0xf0\ntcp_sendmsg+0x33/0x40\n____sys_sendmsg+0x2f2/0x490\n__sys_sendmsg+0x184/0x230\ndo_syscall_64+0x3d/0x90\nAvoid calling __TCP_INC_STATS() with will touch per-cpu variables. Use\nTCP_INC_STATS() which is safe to be called from context switch."], "name": "CVE-2023-53121", "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": "Out of support scope", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53121\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53121\nhttps://lore.kernel.org/linux-cve-announce/2025050231-CVE-2023-53121-40ec@gregkh/T"], "threat_severity": "Moderate"}

{}