{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-38596",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-38596"
  ],
  "published": "2024-06-19T13:46:33Z",
  "summary": "af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg",
  "details": "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",
  "affected": [
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        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-38596"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fca6072e1a7b1e709ada5604b951513b89b4bd0a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/de6641d213373fbde9bbdd7c4b552254bc9f82fe"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4d51845d734a4c5d079e56e0916f936a55e15055"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9aa8773abfa0e954136875b4cbf2df4cf638e8a5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8299e4d778f664b31b67cf4cf3d5409de2ecb92c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0688d4e499bee3f2749bca27329bd128686230cb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a4c88072abcaca593cefe70f90e9d3707526e8f9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a52fa2addfcccc2c5a0217fd45562605088c018b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/540bf24fba16b88c1b3b9353927204b4f1074e25"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}