{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-38596", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Fix data races in unix_release_sock/unix_stream_sendmsg\n\nA data-race condition has been identified in af_unix. In one data path,\nthe write function unix_release_sock() atomically writes to\nsk->sk_shutdown using WRITE_ONCE. However, on the reader side,\nunix_stream_sendmsg() does not read it atomically. Consequently, this\nissue is causing the following KCSAN splat to occur:\n\n\tBUG: KCSAN: data-race in unix_release_sock / unix_stream_sendmsg\n\n\twrite (marked) to 0xffff88867256ddbb of 1 bytes by task 7270 on cpu 28:\n\tunix_release_sock (net/unix/af_unix.c:640)\n\tunix_release (net/unix/af_unix.c:1050)\n\tsock_close (net/socket.c:659 net/socket.c:1421)\n\t__fput (fs/file_table.c:422)\n\t__fput_sync (fs/file_table.c:508)\n\t__se_sys_close (fs/open.c:1559 fs/open.c:1541)\n\t__x64_sys_close (fs/open.c:1541)\n\tx64_sys_call (arch/x86/entry/syscall_64.c:33)\n\tdo_syscall_64 (arch/x86/entry/common.c:?)\n\tentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\n\tread to 0xffff88867256ddbb of 1 bytes by task 989 on cpu 14:\n\tunix_stream_sendmsg (net/unix/af_unix.c:2273)\n\t__sock_sendmsg (net/socket.c:730 net/socket.c:745)\n\t____sys_sendmsg (net/socket.c:2584)\n\t__sys_sendmmsg (net/socket.c:2638 net/socket.c:2724)\n\t__x64_sys_sendmmsg (net/socket.c:2753 net/socket.c:2750 net/socket.c:2750)\n\tx64_sys_call (arch/x86/entry/syscall_64.c:33)\n\tdo_syscall_64 (arch/x86/entry/common.c:?)\n\tentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\n\tvalue changed: 0x01 -> 0x03\n\nThe line numbers are related to commit dd5a440a31fa (\"Linux 6.9-rc7\").\n\nCommit e1d09c2c2f57 (\"af_unix: Fix data races around sk->sk_shutdown.\")\naddressed a comparable issue in the past regarding sk->sk_shutdown.\nHowever, it overlooked resolving this particular data path.\nThis patch only offending unix_stream_sendmsg() function, since the\nother reads seem to be protected by unix_state_lock() as discussed in" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "1da177e4c3f4", "version_value": "fca6072e1a7b" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.316", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.278", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.219", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.161", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.93", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.12", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9.3", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/fca6072e1a7b1e709ada5604b951513b89b4bd0a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/fca6072e1a7b1e709ada5604b951513b89b4bd0a" }, { "url": "https://git.kernel.org/stable/c/de6641d213373fbde9bbdd7c4b552254bc9f82fe", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/de6641d213373fbde9bbdd7c4b552254bc9f82fe" }, { "url": "https://git.kernel.org/stable/c/4d51845d734a4c5d079e56e0916f936a55e15055", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4d51845d734a4c5d079e56e0916f936a55e15055" }, { "url": "https://git.kernel.org/stable/c/9aa8773abfa0e954136875b4cbf2df4cf638e8a5", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/9aa8773abfa0e954136875b4cbf2df4cf638e8a5" }, { "url": "https://git.kernel.org/stable/c/8299e4d778f664b31b67cf4cf3d5409de2ecb92c", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8299e4d778f664b31b67cf4cf3d5409de2ecb92c" }, { "url": "https://git.kernel.org/stable/c/0688d4e499bee3f2749bca27329bd128686230cb", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/0688d4e499bee3f2749bca27329bd128686230cb" }, { "url": "https://git.kernel.org/stable/c/a4c88072abcaca593cefe70f90e9d3707526e8f9", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a4c88072abcaca593cefe70f90e9d3707526e8f9" }, { "url": "https://git.kernel.org/stable/c/a52fa2addfcccc2c5a0217fd45562605088c018b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a52fa2addfcccc2c5a0217fd45562605088c018b" }, { "url": "https://git.kernel.org/stable/c/540bf24fba16b88c1b3b9353927204b4f1074e25", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/540bf24fba16b88c1b3b9353927204b4f1074e25" } ] }, "generator": { "engine": "bippy-c9c4e1df01b2" } }