{"api_version":"1","generated_at":"2026-08-24T10:33:21+00:00","cve":"CVE-2023-53824","urls":{"html":"https://cve.report/CVE-2023-53824","api":"https://cve.report/api/cve/CVE-2023-53824.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-53824","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-53824"},"summary":{"title":"netlink: annotate lockless accesses to nlk->max_recvmsg_len","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: annotate lockless accesses to nlk->max_recvmsg_len\n\nsyzbot reported a data-race in data-race in netlink_recvmsg() [1]\n\nIndeed, netlink_recvmsg() can be run concurrently,\nand netlink_dump() also needs protection.\n\n[1]\nBUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg\n\nread to 0xffff888141840b38 of 8 bytes by task 23057 on cpu 0:\nnetlink_recvmsg+0xea/0x730 net/netlink/af_netlink.c:1988\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n__sys_recvfrom+0x1ee/0x2e0 net/socket.c:2194\n__do_sys_recvfrom net/socket.c:2212 [inline]\n__se_sys_recvfrom net/socket.c:2208 [inline]\n__x64_sys_recvfrom+0x78/0x90 net/socket.c:2208\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nwrite to 0xffff888141840b38 of 8 bytes by task 23037 on cpu 1:\nnetlink_recvmsg+0x114/0x730 net/netlink/af_netlink.c:1989\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n____sys_recvmsg+0x156/0x310 net/socket.c:2720\n___sys_recvmsg net/socket.c:2762 [inline]\ndo_recvmmsg+0x2e5/0x710 net/socket.c:2856\n__sys_recvmmsg net/socket.c:2935 [inline]\n__do_sys_recvmmsg net/socket.c:2958 [inline]\n__se_sys_recvmmsg net/socket.c:2951 [inline]\n__x64_sys_recvmmsg+0xe2/0x160 net/socket.c:2951\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0x0000000000001000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 23037 Comm: syz-executor.2 Not tainted 6.3.0-rc4-syzkaller-00195-g5a57b48fdfcb #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-09 16:17:21","updated_at":"2026-08-04 10:19:23"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/a1865f2e7d10dde00d35a2122b38d2e469ae67ed","name":"https://git.kernel.org/stable/c/a1865f2e7d10dde00d35a2122b38d2e469ae67ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7cff4103be7c402ecc3e7bf8f95a64089e3c91b8","name":"https://git.kernel.org/stable/c/7cff4103be7c402ecc3e7bf8f95a64089e3c91b8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e3bcf2a77060bea4d8d09cb09d92c7056f07df5a","name":"https://git.kernel.org/stable/c/e3bcf2a77060bea4d8d09cb09d92c7056f07df5a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/05c9e3fc93b02d18c3ab258d43350a6d44b40bbd","name":"https://git.kernel.org/stable/c/05c9e3fc93b02d18c3ab258d43350a6d44b40bbd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fc4ba13013ddaea8b11b88fd52b35449e2d9cf85","name":"https://git.kernel.org/stable/c/fc4ba13013ddaea8b11b88fd52b35449e2d9cf85","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53824","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53824","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9063e21fb026c4966fc93261c18322214f9835eb 05c9e3fc93b02d18c3ab258d43350a6d44b40bbd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9063e21fb026c4966fc93261c18322214f9835eb 7cff4103be7c402ecc3e7bf8f95a64089e3c91b8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9063e21fb026c4966fc93261c18322214f9835eb e3bcf2a77060bea4d8d09cb09d92c7056f07df5a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9063e21fb026c4966fc93261c18322214f9835eb fc4ba13013ddaea8b11b88fd52b35449e2d9cf85 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9063e21fb026c4966fc93261c18322214f9835eb a1865f2e7d10dde00d35a2122b38d2e469ae67ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.218 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.160 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.24 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2.11 6.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2023","cve_id":"53824","cve":"CVE-2023-53824","epss":"0.001740000","percentile":"0.070060000","score_date":"2026-08-05","updated_at":"2026-08-06 00:00:37"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netlink/af_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"05c9e3fc93b02d18c3ab258d43350a6d44b40bbd","status":"affected","version":"9063e21fb026c4966fc93261c18322214f9835eb","versionType":"git"},{"lessThan":"7cff4103be7c402ecc3e7bf8f95a64089e3c91b8","status":"affected","version":"9063e21fb026c4966fc93261c18322214f9835eb","versionType":"git"},{"lessThan":"e3bcf2a77060bea4d8d09cb09d92c7056f07df5a","status":"affected","version":"9063e21fb026c4966fc93261c18322214f9835eb","versionType":"git"},{"lessThan":"fc4ba13013ddaea8b11b88fd52b35449e2d9cf85","status":"affected","version":"9063e21fb026c4966fc93261c18322214f9835eb","versionType":"git"},{"lessThan":"a1865f2e7d10dde00d35a2122b38d2e469ae67ed","status":"affected","version":"9063e21fb026c4966fc93261c18322214f9835eb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/netlink/af_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.15"},{"lessThan":"3.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.218","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.160","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.24","versionType":"semver"},{"lessThanOrEqual":"6.2.*","status":"unaffected","version":"6.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.218","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.160","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.24","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.2.11","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.3","versionStartIncluding":"3.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: annotate lockless accesses to nlk->max_recvmsg_len\n\nsyzbot reported a data-race in data-race in netlink_recvmsg() [1]\n\nIndeed, netlink_recvmsg() can be run concurrently,\nand netlink_dump() also needs protection.\n\n[1]\nBUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg\n\nread to 0xffff888141840b38 of 8 bytes by task 23057 on cpu 0:\nnetlink_recvmsg+0xea/0x730 net/netlink/af_netlink.c:1988\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n__sys_recvfrom+0x1ee/0x2e0 net/socket.c:2194\n__do_sys_recvfrom net/socket.c:2212 [inline]\n__se_sys_recvfrom net/socket.c:2208 [inline]\n__x64_sys_recvfrom+0x78/0x90 net/socket.c:2208\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nwrite to 0xffff888141840b38 of 8 bytes by task 23037 on cpu 1:\nnetlink_recvmsg+0x114/0x730 net/netlink/af_netlink.c:1989\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n____sys_recvmsg+0x156/0x310 net/socket.c:2720\n___sys_recvmsg net/socket.c:2762 [inline]\ndo_recvmmsg+0x2e5/0x710 net/socket.c:2856\n__sys_recvmmsg net/socket.c:2935 [inline]\n__do_sys_recvmmsg net/socket.c:2958 [inline]\n__se_sys_recvmmsg net/socket.c:2951 [inline]\n__x64_sys_recvmmsg+0xe2/0x160 net/socket.c:2951\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0x0000000000001000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 23037 Comm: syz-executor.2 Not tainted 6.3.0-rc4-syzkaller-00195-g5a57b48fdfcb #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023"}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:16:50.743Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/05c9e3fc93b02d18c3ab258d43350a6d44b40bbd"},{"url":"https://git.kernel.org/stable/c/7cff4103be7c402ecc3e7bf8f95a64089e3c91b8"},{"url":"https://git.kernel.org/stable/c/e3bcf2a77060bea4d8d09cb09d92c7056f07df5a"},{"url":"https://git.kernel.org/stable/c/fc4ba13013ddaea8b11b88fd52b35449e2d9cf85"},{"url":"https://git.kernel.org/stable/c/a1865f2e7d10dde00d35a2122b38d2e469ae67ed"}],"title":"netlink: annotate lockless accesses to nlk->max_recvmsg_len","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-53824","datePublished":"2025-12-09T01:29:37.432Z","dateReserved":"2025-12-09T01:27:17.824Z","dateUpdated":"2026-08-04T09:16:50.743Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-09 16:17:21","lastModifiedDate":"2026-08-04 10:19:23","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"53824","Ordinal":"1","Title":"netlink: annotate lockless accesses to nlk->max_recvmsg_len","CVE":"CVE-2023-53824","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"53824","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: annotate lockless accesses to nlk->max_recvmsg_len\n\nsyzbot reported a data-race in data-race in netlink_recvmsg() [1]\n\nIndeed, netlink_recvmsg() can be run concurrently,\nand netlink_dump() also needs protection.\n\n[1]\nBUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg\n\nread to 0xffff888141840b38 of 8 bytes by task 23057 on cpu 0:\nnetlink_recvmsg+0xea/0x730 net/netlink/af_netlink.c:1988\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n__sys_recvfrom+0x1ee/0x2e0 net/socket.c:2194\n__do_sys_recvfrom net/socket.c:2212 [inline]\n__se_sys_recvfrom net/socket.c:2208 [inline]\n__x64_sys_recvfrom+0x78/0x90 net/socket.c:2208\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nwrite to 0xffff888141840b38 of 8 bytes by task 23037 on cpu 1:\nnetlink_recvmsg+0x114/0x730 net/netlink/af_netlink.c:1989\nsock_recvmsg_nosec net/socket.c:1017 [inline]\nsock_recvmsg net/socket.c:1038 [inline]\n____sys_recvmsg+0x156/0x310 net/socket.c:2720\n___sys_recvmsg net/socket.c:2762 [inline]\ndo_recvmmsg+0x2e5/0x710 net/socket.c:2856\n__sys_recvmmsg net/socket.c:2935 [inline]\n__do_sys_recvmmsg net/socket.c:2958 [inline]\n__se_sys_recvmmsg net/socket.c:2951 [inline]\n__x64_sys_recvmmsg+0xe2/0x160 net/socket.c:2951\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0x0000000000001000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 23037 Comm: syz-executor.2 Not tainted 6.3.0-rc4-syzkaller-00195-g5a57b48fdfcb #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023","Type":"Description","Title":"netlink: annotate lockless accesses to nlk->max_recvmsg_len"}]}}}