FKIE_CVE-2023-54006

Vulnerability from fkie_nvd - Published: 2025-12-24 11:15 - Updated: 2026-06-17 06:46
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data-race around unix_tot_inflight. unix_tot_inflight is changed under spin_lock(unix_gc_lock), but unix_release_sock() reads it locklessly. Let's use READ_ONCE() for unix_tot_inflight. Note that the writer side was marked by commit 9d6d7f1cb67c ("af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress") BUG: KCSAN: data-race in unix_inflight / unix_release_sock write (marked) to 0xffffffff871852b8 of 4 bytes by task 123 on cpu 1: unix_inflight+0x130/0x180 net/unix/scm.c:64 unix_attach_fds+0x137/0x1b0 net/unix/scm.c:123 unix_scm_to_skb net/unix/af_unix.c:1832 [inline] unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1955 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x148/0x160 net/socket.c:747 ____sys_sendmsg+0x4e4/0x610 net/socket.c:2493 ___sys_sendmsg+0xc6/0x140 net/socket.c:2547 __sys_sendmsg+0x94/0x140 net/socket.c:2576 __do_sys_sendmsg net/socket.c:2585 [inline] __se_sys_sendmsg net/socket.c:2583 [inline] __x64_sys_sendmsg+0x45/0x50 net/socket.c:2583 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc read to 0xffffffff871852b8 of 4 bytes by task 4891 on cpu 0: unix_release_sock+0x608/0x910 net/unix/af_unix.c:671 unix_release+0x59/0x80 net/unix/af_unix.c:1058 __sock_release+0x7d/0x170 net/socket.c:653 sock_close+0x19/0x30 net/socket.c:1385 __fput+0x179/0x5e0 fs/file_table.c:321 ____fput+0x15/0x20 fs/file_table.c:349 task_work_run+0x116/0x1a0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297 do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x72/0xdc value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4891 Comm: systemd-coredum Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20aa8325464d8905450089eed96ca102a074d853
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2d8933ca863e252fb09ad0be483255e3dfeb1f54
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31b46d5e7c4e295bd112960614a66a177a057dca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d91b7891f4a9a9d69d75e9f44ab4bf1f3b11840
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ade32bd8a738d7497ffe9743c46728db26740f78
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afc284a4a781defbb12b2a40427fae34c3d20e17
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf29b42766ad4af2ae6a449f583796951551b48d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e5edc6e44a882c0458878ab10eaddfe60ac34e57
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/unix/af_unix.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "31b46d5e7c4e295bd112960614a66a177a057dca",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "20aa8325464d8905450089eed96ca102a074d853",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "5d91b7891f4a9a9d69d75e9f44ab4bf1f3b11840",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "cf29b42766ad4af2ae6a449f583796951551b48d",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "e5edc6e44a882c0458878ab10eaddfe60ac34e57",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "2d8933ca863e252fb09ad0be483255e3dfeb1f54",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "afc284a4a781defbb12b2a40427fae34c3d20e17",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            },
            {
              "lessThan": "ade32bd8a738d7497ffe9743c46728db26740f78",
              "status": "affected",
              "version": "9305cfa4443dbfb99faf35c5603ec0c0e91b5ef8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/unix/af_unix.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.24"
            },
            {
              "lessThan": "2.6.24",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.326",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.295",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Fix data-race around unix_tot_inflight.\n\nunix_tot_inflight is changed under spin_lock(unix_gc_lock), but\nunix_release_sock() reads it locklessly.\n\nLet\u0027s use READ_ONCE() for unix_tot_inflight.\n\nNote that the writer side was marked by commit 9d6d7f1cb67c (\"af_unix:\nannote lockless accesses to unix_tot_inflight \u0026 gc_in_progress\")\n\nBUG: KCSAN: data-race in unix_inflight / unix_release_sock\n\nwrite (marked) to 0xffffffff871852b8 of 4 bytes by task 123 on cpu 1:\n unix_inflight+0x130/0x180 net/unix/scm.c:64\n unix_attach_fds+0x137/0x1b0 net/unix/scm.c:123\n unix_scm_to_skb net/unix/af_unix.c:1832 [inline]\n unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1955\n sock_sendmsg_nosec net/socket.c:724 [inline]\n sock_sendmsg+0x148/0x160 net/socket.c:747\n ____sys_sendmsg+0x4e4/0x610 net/socket.c:2493\n ___sys_sendmsg+0xc6/0x140 net/socket.c:2547\n __sys_sendmsg+0x94/0x140 net/socket.c:2576\n __do_sys_sendmsg net/socket.c:2585 [inline]\n __se_sys_sendmsg net/socket.c:2583 [inline]\n __x64_sys_sendmsg+0x45/0x50 net/socket.c:2583\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+0x72/0xdc\n\nread to 0xffffffff871852b8 of 4 bytes by task 4891 on cpu 0:\n unix_release_sock+0x608/0x910 net/unix/af_unix.c:671\n unix_release+0x59/0x80 net/unix/af_unix.c:1058\n __sock_release+0x7d/0x170 net/socket.c:653\n sock_close+0x19/0x30 net/socket.c:1385\n __fput+0x179/0x5e0 fs/file_table.c:321\n ____fput+0x15/0x20 fs/file_table.c:349\n task_work_run+0x116/0x1a0 kernel/task_work.c:179\n resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:171 [inline]\n exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204\n __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]\n syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297\n do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nvalue changed: 0x00000000 -\u003e 0x00000001\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 4891 Comm: systemd-coredum Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014"
    }
  ],
  "id": "CVE-2023-54006",
  "lastModified": "2026-06-17T06:46:31.470",
  "metrics": {},
  "published": "2025-12-24T11:15:53.527",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/20aa8325464d8905450089eed96ca102a074d853"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d8933ca863e252fb09ad0be483255e3dfeb1f54"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/31b46d5e7c4e295bd112960614a66a177a057dca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d91b7891f4a9a9d69d75e9f44ab4bf1f3b11840"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ade32bd8a738d7497ffe9743c46728db26740f78"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/afc284a4a781defbb12b2a40427fae34c3d20e17"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cf29b42766ad4af2ae6a449f583796951551b48d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e5edc6e44a882c0458878ab10eaddfe60ac34e57"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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