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CVE-2023-54218

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().

KCSAN found a data race in sock_recv_cmsgs() where the read access to sk->sk_stamp needs READ_ONCE().

write (marked) to 0xffff88803c81f258 of 8 bytes by task 19171 on cpu 0: sock_write_timestamp include/net/sock.h:2670 [inline] sock_recv_cmsgs include/net/sock.h:2722 [inline] packet_recvmsg+0xb97/0xd00 net/packet/af_packet.c:3489 sock_recvmsg_nosec net/socket.c:1019 [inline] sock_recvmsg+0x11a/0x130 net/socket.c:1040 sock_read_iter+0x176/0x220 net/socket.c:1118 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x5e0/0x630 fs/read_write.c:470 ksys_read+0x163/0x1a0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x41/0x50 fs/read_write.c:621 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

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value changed: 0xffffffffc4653600 -> 0x0000000000000000

Detalles técnicos trazas, registros y código del informe original
BUG: KCSAN: data-race in packet_recvmsg / packet_recvmsg

read to 0xffff88803c81f258 of 8 bytes by task 19183 on cpu 1:
 sock_recv_cmsgs include/net/sock.h:2721 [inline]
 packet_recvmsg+0xb64/0xd00 net/packet/af_packet.c:3489
 sock_recvmsg_nosec net/socket.c:1019 [inline]
 sock_recvmsg+0x11a/0x130 net/socket.c:1040
 sock_read_iter+0x176/0x220 net/socket.c:1118
 call_read_iter include/linux/fs.h:1845 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x5e0/0x630 fs/read_write.c:470
 ksys_read+0x163/0x1a0 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x41/0x50 fs/read_write.c:621
 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

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19183 Comm: syz-executor.5 Not tainted 6.3.0-rc7-02330-gca6270c12e20 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-54218",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "fd28692fa182d25e8d26bc1db506648839fde245",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "564c3150ad357d571a0de7d8b644aa1f7e6e21b7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "d7343f8de019ebb55b2b6ef79b971f6ceb361a99",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "d06f67b2b8dcd00d995c468428b6bccebc5762d8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "de260d1e02cde39d317066835ee6e5234fc9f5a8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "7145f2309d649ad6273b9f66448321b9b4c523c8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "8319220054e5ea5f506d8d4c4b5e234f668ffc3b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6c7c98bad4883a4a8710c96b2b44de482865eb6e",
              "lessThan": "dfd9248c071a3710c24365897459538551cb7167",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "include/net/sock.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.14.316",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.284",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.244",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.181",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.113",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.30",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.3.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "include/net/sock.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:16:10.067",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/564c3150ad357d571a0de7d8b644aa1f7e6e21b7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7145f2309d649ad6273b9f66448321b9b4c523c8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8319220054e5ea5f506d8d4c4b5e234f668ffc3b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d06f67b2b8dcd00d995c468428b6bccebc5762d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d7343f8de019ebb55b2b6ef79b971f6ceb361a99",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/de260d1e02cde39d317066835ee6e5234fc9f5a8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dfd9248c071a3710c24365897459538551cb7167",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fd28692fa182d25e8d26bc1db506648839fde245",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().\n\nKCSAN found a data race in sock_recv_cmsgs() where the read access\nto sk->sk_stamp needs READ_ONCE().\n\nBUG: KCSAN: data-race in packet_recvmsg / packet_recvmsg\n\nwrite (marked) to 0xffff88803c81f258 of 8 bytes by task 19171 on cpu 0:\n sock_write_timestamp include/net/sock.h:2670 [inline]\n sock_recv_cmsgs include/net/sock.h:2722 [inline]\n packet_recvmsg+0xb97/0xd00 net/packet/af_packet.c:3489\n sock_recvmsg_nosec net/socket.c:1019 [inline]\n sock_recvmsg+0x11a/0x130 net/socket.c:1040\n sock_read_iter+0x176/0x220 net/socket.c:1118\n call_read_iter include/linux/fs.h:1845 [inline]\n new_sync_read fs/read_write.c:389 [inline]\n vfs_read+0x5e0/0x630 fs/read_write.c:470\n ksys_read+0x163/0x1a0 fs/read_write.c:613\n __do_sys_read fs/read_write.c:623 [inline]\n __se_sys_read fs/read_write.c:621 [inline]\n __x64_sys_read+0x41/0x50 fs/read_write.c:621\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 0xffff88803c81f258 of 8 bytes by task 19183 on cpu 1:\n sock_recv_cmsgs include/net/sock.h:2721 [inline]\n packet_recvmsg+0xb64/0xd00 net/packet/af_packet.c:3489\n sock_recvmsg_nosec net/socket.c:1019 [inline]\n sock_recvmsg+0x11a/0x130 net/socket.c:1040\n sock_read_iter+0x176/0x220 net/socket.c:1118\n call_read_iter include/linux/fs.h:1845 [inline]\n new_sync_read fs/read_write.c:389 [inline]\n vfs_read+0x5e0/0x630 fs/read_write.c:470\n ksys_read+0x163/0x1a0 fs/read_write.c:613\n __do_sys_read fs/read_write.c:623 [inline]\n __se_sys_read fs/read_write.c:621 [inline]\n __x64_sys_read+0x41/0x50 fs/read_write.c:621\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\nvalue changed: 0xffffffffc4653600 -> 0x0000000000000000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 19183 Comm: syz-executor.5 Not tainted 6.3.0-rc7-02330-gca6270c12e20 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014"
    }
  ],
  "lastModified": "2026-06-17T06:47:02.117",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}