{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-53204", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53204", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-09-15T14:21:32.696Z", "updatedAt": "2026-05-23T15:28:14.623Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "af_unix: Fix data-races around user->unix_inflight.", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Fix data-races around user->unix_inflight.\n\nuser->unix_inflight is changed under spin_lock(unix_gc_lock),\nbut too_many_unix_fds() reads it locklessly.\n\nLet's annotate the write/read accesses to user->unix_inflight.\n\nBUG: KCSAN: data-race in unix_attach_fds / unix_inflight\n\nwrite to 0xffffffff8546f2d0 of 8 bytes by task 44798 on cpu 1:\n unix_inflight+0x157/0x180 net/unix/scm.c:66\n unix_attach_fds+0x147/0x1e0 net/unix/scm.c:123\n unix_scm_to_skb net/unix/af_unix.c:1827 [inline]\n unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1950\n unix_seqpacket_sendmsg net/unix/af_unix.c:2308 [inline]\n unix_seqpacket_sendmsg+0xba/0x130 net/unix/af_unix.c:2292\n sock_sendmsg_nosec net/socket.c:725 [inline]\n sock_sendmsg+0x148/0x160 net/socket.c:748\n ____sys_sendmsg+0x4e4/0x610 net/socket.c:2494\n ___sys_sendmsg+0xc6/0x140 net/socket.c:2548\n __sys_sendmsg+0x94/0x140 net/socket.c:2577\n __do_sys_sendmsg net/socket.c:2586 [inline]\n __se_sys_sendmsg net/socket.c:2584 [inline]\n __x64_sys_sendmsg+0x45/0x50 net/socket.c:2584\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nread to 0xffffffff8546f2d0 of 8 bytes by task 44814 on cpu 0:\n too_many_unix_fds net/unix/scm.c:101 [inline]\n unix_attach_fds+0x54/0x1e0 net/unix/scm.c:110\n unix_scm_to_skb net/unix/af_unix.c:1827 [inline]\n unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1950\n unix_seqpacket_sendmsg net/unix/af_unix.c:2308 [inline]\n unix_seqpacket_sendmsg+0xba/0x130 net/unix/af_unix.c:2292\n sock_sendmsg_nosec net/socket.c:725 [inline]\n sock_sendmsg+0x148/0x160 net/socket.c:748\n ____sys_sendmsg+0x4e4/0x610 net/socket.c:2494\n ___sys_sendmsg+0xc6/0x140 net/socket.c:2548\n __sys_sendmsg+0x94/0x140 net/socket.c:2577\n __do_sys_sendmsg net/socket.c:2586 [inline]\n __se_sys_sendmsg net/socket.c:2584 [inline]\n __x64_sys_sendmsg+0x45/0x50 net/socket.c:2584\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nvalue changed: 0x000000000000000c -> 0x000000000000000d\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 44814 Comm: systemd-coredum Not tainted 6.4.0-11989-g6843306689af #6\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "df97b5ea9f3ac9308c3a633524dab382cd59d9e5" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "03d133dfbcec9d439729cc64706c7eb6d1663a24" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "adcf4e069358cdee8593663650ea447215a1c49e" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "b401d7e485b0a234cf8fe9a6ae99dbcd20863138" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "9151ed4b006125cba7c06c79df504340ea4e9386" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "b9cdbb38e030fc2fe97fe27b54cbb6b4fbff250f" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "ac92f239a079678a035c0faad9089354a874aede" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "status": "affected", "versionType": "git", "lessThan": "0bc36c0650b21df36fbec8136add83936eaf0607" }, { "version": "a5a6cf8c405e826ff7ed1308dde72560c0ed4854", "status": "affected", "versionType": "git" }, { "version": "df87da0783c4492b944badfea9d5c3c56b834697", "status": "affected", "versionType": "git" }, { "version": "3d024dcef2548028e9f9b7876a544e6e0af00175", "status": "affected", "versionType": "git" }, { "version": "aa51d1c24ec3b6605f7cc7ef500c96cd71d7ef90", "status": "affected", "versionType": "git" }, { "version": "a5b9e44af8d3edaf49d14a91cc519a9fba439e67", "status": "affected", "versionType": "git" }, { "version": "dc6b0ec667f67d4768e72c1b7f1bbc14ea52379c", "status": "affected", "versionType": "git" }, { "version": "9b8b611fe0f86f07a4ff4a5f3bcb0ea7ceb7da3b", "status": "affected", "versionType": "git" }, { "version": "5e226f9689d90ad8ab21b4a969ae3058777f0aff", "status": "affected", "versionType": "git" }, { "version": "3.2.78", "status": "affected", "versionType": "semver", "lessThan": "3.3" }, { "version": "3.10.96", "status": "affected", "versionType": "semver", "lessThan": "3.11" }, { "version": "3.12.57", "status": "affected", "versionType": "semver", "lessThan": "3.13" }, { "version": "3.14.60", "status": "affected", "versionType": "semver", "lessThan": "3.15" }, { "version": "3.18.27", "status": "affected", "versionType": "semver", "lessThan": "3.19" }, { "version": "4.1.17", "status": "affected", "versionType": "semver", "lessThan": "4.2" }, { "version": "4.3.5", "status": "affected", "versionType": "semver", "lessThan": "4.4" }, { "version": "4.4.1", "status": "affected", "versionType": "semver", "lessThan": "4.5" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.5", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.5" }, { "version": "4.14.326", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.295", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.257", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.195", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.132", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.54", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.5.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.5.*" }, { "version": "6.6", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }