CVE-2024-38596 (GCVE-0-2024-38596)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:45 – Updated: 2025-11-04 17:21
VLAI?
Title
af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg
Summary
In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg A data-race condition has been identified in af_unix. In one data path, the write function unix_release_sock() atomically writes to sk->sk_shutdown using WRITE_ONCE. However, on the reader side, unix_stream_sendmsg() does not read it atomically. Consequently, this issue is causing the following KCSAN splat to occur: BUG: KCSAN: data-race in unix_release_sock / unix_stream_sendmsg write (marked) to 0xffff88867256ddbb of 1 bytes by task 7270 on cpu 28: unix_release_sock (net/unix/af_unix.c:640) unix_release (net/unix/af_unix.c:1050) sock_close (net/socket.c:659 net/socket.c:1421) __fput (fs/file_table.c:422) __fput_sync (fs/file_table.c:508) __se_sys_close (fs/open.c:1559 fs/open.c:1541) __x64_sys_close (fs/open.c:1541) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) read to 0xffff88867256ddbb of 1 bytes by task 989 on cpu 14: unix_stream_sendmsg (net/unix/af_unix.c:2273) __sock_sendmsg (net/socket.c:730 net/socket.c:745) ____sys_sendmsg (net/socket.c:2584) __sys_sendmmsg (net/socket.c:2638 net/socket.c:2724) __x64_sys_sendmmsg (net/socket.c:2753 net/socket.c:2750 net/socket.c:2750) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) value changed: 0x01 -> 0x03 The line numbers are related to commit dd5a440a31fa ("Linux 6.9-rc7"). Commit e1d09c2c2f57 ("af_unix: Fix data races around sk->sk_shutdown.") addressed a comparable issue in the past regarding sk->sk_shutdown. However, it overlooked resolving this particular data path. This patch only offending unix_stream_sendmsg() function, since the other reads seem to be protected by unix_state_lock() as discussed in
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fca6072e1a7b1e709ada5604b951513b89b4bd0a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < de6641d213373fbde9bbdd7c4b552254bc9f82fe (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4d51845d734a4c5d079e56e0916f936a55e15055 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9aa8773abfa0e954136875b4cbf2df4cf638e8a5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8299e4d778f664b31b67cf4cf3d5409de2ecb92c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0688d4e499bee3f2749bca27329bd128686230cb (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a4c88072abcaca593cefe70f90e9d3707526e8f9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a52fa2addfcccc2c5a0217fd45562605088c018b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 540bf24fba16b88c1b3b9353927204b4f1074e25 (git)
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    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.19.316 , ≤ 4.19.* (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.8.12 , ≤ 6.8.* (semver)
Unaffected: 6.9.3 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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\"lessThan\": \"8299e4d778f664b31b67cf4cf3d5409de2ecb92c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"0688d4e499bee3f2749bca27329bd128686230cb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"a4c88072abcaca593cefe70f90e9d3707526e8f9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"a52fa2addfcccc2c5a0217fd45562605088c018b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"540bf24fba16b88c1b3b9353927204b4f1074e25\", \"versionType\": \"git\"}], \"programFiles\": [\"net/unix/af_unix.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.316\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.278\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.219\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.161\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.93\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/unix/af_unix.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/fca6072e1a7b1e709ada5604b951513b89b4bd0a\"}, {\"url\": \"https://git.kernel.org/stable/c/de6641d213373fbde9bbdd7c4b552254bc9f82fe\"}, {\"url\": \"https://git.kernel.org/stable/c/4d51845d734a4c5d079e56e0916f936a55e15055\"}, {\"url\": \"https://git.kernel.org/stable/c/9aa8773abfa0e954136875b4cbf2df4cf638e8a5\"}, {\"url\": \"https://git.kernel.org/stable/c/8299e4d778f664b31b67cf4cf3d5409de2ecb92c\"}, {\"url\": \"https://git.kernel.org/stable/c/0688d4e499bee3f2749bca27329bd128686230cb\"}, {\"url\": \"https://git.kernel.org/stable/c/a4c88072abcaca593cefe70f90e9d3707526e8f9\"}, {\"url\": \"https://git.kernel.org/stable/c/a52fa2addfcccc2c5a0217fd45562605088c018b\"}, {\"url\": \"https://git.kernel.org/stable/c/540bf24fba16b88c1b3b9353927204b4f1074e25\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"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-\u003esk_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 -\u003e 0x03\\n\\nThe line numbers are related to commit dd5a440a31fa (\\\"Linux 6.9-rc7\\\").\\n\\nCommit e1d09c2c2f57 (\\\"af_unix: Fix data races around sk-\u003esk_shutdown.\\\")\\naddressed a comparable issue in the past regarding sk-\u003esk_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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.316\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.278\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.219\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.12\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.3\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:14:55.180Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38596\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T17:21:40.772Z\", \"dateReserved\": \"2024-06-18T19:36:34.931Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:45:45.984Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.