{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53204", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T13:59:19.068Z", "datePublished": "2025-09-15T14:21:32.696Z", "dateUpdated": "2026-05-23T15:28:14.623Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:28:14.623Z" }, "descriptions": [ { "lang": "en", "value": "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": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/unix/scm.c" ], "versions": [ { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "df97b5ea9f3ac9308c3a633524dab382cd59d9e5", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "03d133dfbcec9d439729cc64706c7eb6d1663a24", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "adcf4e069358cdee8593663650ea447215a1c49e", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "b401d7e485b0a234cf8fe9a6ae99dbcd20863138", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "9151ed4b006125cba7c06c79df504340ea4e9386", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "b9cdbb38e030fc2fe97fe27b54cbb6b4fbff250f", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "ac92f239a079678a035c0faad9089354a874aede", "status": "affected", "versionType": "git" }, { "version": "712f4aad406bb1ed67f3f98d04c044191f0ff593", "lessThan": "0bc36c0650b21df36fbec8136add83936eaf0607", "status": "affected", "versionType": "git" }, { "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", "lessThan": "3.3", "status": "affected", "versionType": "semver" }, { "version": "3.10.96", "lessThan": "3.11", "status": "affected", "versionType": "semver" }, { "version": "3.12.57", "lessThan": "3.13", "status": "affected", "versionType": "semver" }, { "version": "3.14.60", "lessThan": "3.15", "status": "affected", "versionType": "semver" }, { "version": "3.18.27", "lessThan": "3.19", "status": "affected", "versionType": "semver" }, { "version": "4.1.17", "lessThan": "4.2", "status": "affected", "versionType": "semver" }, { "version": "4.3.5", "lessThan": "4.4", "status": "affected", "versionType": "semver" }, { "version": "4.4.1", "lessThan": "4.5", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/unix/scm.c" ], "versions": [ { "version": "4.5", "status": "affected" }, { "version": "0", "lessThan": "4.5", "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": "4.5", "versionEndExcluding": "4.14.326" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "4.19.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.4.257" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.10.195" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.15.132" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.1.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.5.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10.96" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.14.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18.27" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/df97b5ea9f3ac9308c3a633524dab382cd59d9e5" }, { "url": "https://git.kernel.org/stable/c/03d133dfbcec9d439729cc64706c7eb6d1663a24" }, { "url": "https://git.kernel.org/stable/c/adcf4e069358cdee8593663650ea447215a1c49e" }, { "url": "https://git.kernel.org/stable/c/b401d7e485b0a234cf8fe9a6ae99dbcd20863138" }, { "url": "https://git.kernel.org/stable/c/9151ed4b006125cba7c06c79df504340ea4e9386" }, { "url": "https://git.kernel.org/stable/c/b9cdbb38e030fc2fe97fe27b54cbb6b4fbff250f" }, { "url": "https://git.kernel.org/stable/c/ac92f239a079678a035c0faad9089354a874aede" }, { "url": "https://git.kernel.org/stable/c/0bc36c0650b21df36fbec8136add83936eaf0607" } ], "title": "af_unix: Fix data-races around user->unix_inflight.", "x_generator": { "engine": "bippy-1.2.0" } } } }