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CVE-2023-53831

Estado: AplazadaSin puntuar—

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

net: read sk->sk_family once in sk_mc_loop()

syzbot is playing with IPV6_ADDRFORM quite a lot these days, and managed to hit the WARN_ON_ONCE(1) in sk_mc_loop()

We have many more similar issues to fix.

Detalles técnicos trazas, registros y código del informe original
WARNING: CPU: 1 PID: 1593 at net/core/sock.c:782 sk_mc_loop+0x165/0x260
Modules linked in:
CPU: 1 PID: 1593 Comm: kworker/1:3 Not tainted 6.1.40-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_power_efficient gc_worker
RIP: 0010:sk_mc_loop+0x165/0x260 net/core/sock.c:782
Code: 34 1b fd 49 81 c7 18 05 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 25 36 6d fd 4d 8b 37 eb 13 e8 db 33 1b fd <0f> 0b b3 01 eb 34 e8 d0 33 1b fd 45 31 f6 49 83 c6 38 4c 89 f0 48
RSP: 0018:ffffc90000388530 EFLAGS: 00010246
RAX: ffffffff846d9b55 RBX: 0000000000000011 RCX: ffff88814f884980
RDX: 0000000000000102 RSI: ffffffff87ae5160 RDI: 0000000000000011
RBP: ffffc90000388550 R08: 0000000000000003 R09: ffffffff846d9a65
R10: 0000000000000002 R11: ffff88814f884980 R12: dffffc0000000000
R13: ffff88810dbee000 R14: 0000000000000010 R15: ffff888150084000
FS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 000000014ee5b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
[<ffffffff8507734f>] ip6_finish_output2+0x33f/0x1ae0 net/ipv6/ip6_output.c:83
[<ffffffff85062766>] __ip6_finish_output net/ipv6/ip6_output.c:200 [inline]
[<ffffffff85062766>] ip6_finish_output+0x6c6/0xb10 net/ipv6/ip6_output.c:211
[<ffffffff85061f8c>] NF_HOOK_COND include/linux/netfilter.h:298 [inline]
[<ffffffff85061f8c>] ip6_output+0x2bc/0x3d0 net/ipv6/ip6_output.c:232
[<ffffffff852071cf>] dst_output include/net/dst.h:444 [inline]
[<ffffffff852071cf>] ip6_local_out+0x10f/0x140 net/ipv6/output_core.c:161
[<ffffffff83618fb4>] ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:483 [inline]
[<ffffffff83618fb4>] ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:529 [inline]
[<ffffffff83618fb4>] ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:602 [inline]
[<ffffffff83618fb4>] ipvlan_queue_xmit+0x1174/0x1be0 drivers/net/ipvlan/ipvlan_core.c:677
[<ffffffff8361ddd9>] ipvlan_start_xmit+0x49/0x100 drivers/net/ipvlan/ipvlan_main.c:229
[<ffffffff84763fc0>] netdev_start_xmit include/linux/netdevice.h:4925 [inline]
[<ffffffff84763fc0>] xmit_one net/core/dev.c:3644 [inline]
[<ffffffff84763fc0>] dev_hard_start_xmit+0x320/0x980 net/core/dev.c:3660
[<ffffffff8494c650>] sch_direct_xmit+0x2a0/0x9c0 net/sched/sch_generic.c:342
[<ffffffff8494d883>] qdisc_restart net/sched/sch_generic.c:407 [inline]
[<ffffffff8494d883>] __qdisc_run+0xb13/0x1e70 net/sched/sch_generic.c:415
[<ffffffff8478c426>] qdisc_run+0xd6/0x260 include/net/pkt_sched.h:125
[<ffffffff84796eac>] net_tx_action+0x7ac/0x940 net/core/dev.c:5247
[<ffffffff858002bd>] __do_softirq+0x2bd/0x9bd kernel/softirq.c:599
[<ffffffff814c3fe8>] invoke_softirq kernel/softirq.c:430 [inline]
[<ffffffff814c3fe8>] __irq_exit_rcu+0xc8/0x170 kernel/softirq.c:683
[<ffffffff814c3f09>] irq_exit_rcu+0x9/0x20 kernel/softirq.c:695

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)

Mostrar
{
  "id": "CVE-2023-53831",
  "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": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "7586a66b9c4f1b8a825ea1dfa3a91aad5cc7b89b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "e918d0211ffbaf039447334c3460cafee1ce0157",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "41f10a4d78fe69d685a3172e6884297f233dcf95",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "895dc4c47171a20035cdaa8d74c1c1e97f2fc974",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "ed4e0adfa407ab65dd73b8862ebf2f308a0349d2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "9036b6342fcdab190d6edce3dd447859c1de90fc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "b1f5b890b89cb38a6c0bac91984d56cd69808e8c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ad6848c7e81a603605fad3f3575841aab004eea",
              "lessThan": "a3e0fdf71bbe031de845e8e08ed7fba49f9c702c",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/core/sock.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.33"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.33",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.14.326",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.295",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.257",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.195",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.132",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.5.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/core/sock.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-09T16:17:22.017",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/41f10a4d78fe69d685a3172e6884297f233dcf95",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7586a66b9c4f1b8a825ea1dfa3a91aad5cc7b89b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/895dc4c47171a20035cdaa8d74c1c1e97f2fc974",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9036b6342fcdab190d6edce3dd447859c1de90fc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a3e0fdf71bbe031de845e8e08ed7fba49f9c702c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b1f5b890b89cb38a6c0bac91984d56cd69808e8c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e918d0211ffbaf039447334c3460cafee1ce0157",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ed4e0adfa407ab65dd73b8862ebf2f308a0349d2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: read sk->sk_family once in sk_mc_loop()\n\nsyzbot is playing with IPV6_ADDRFORM quite a lot these days,\nand managed to hit the WARN_ON_ONCE(1) in sk_mc_loop()\n\nWe have many more similar issues to fix.\n\nWARNING: CPU: 1 PID: 1593 at net/core/sock.c:782 sk_mc_loop+0x165/0x260\nModules linked in:\nCPU: 1 PID: 1593 Comm: kworker/1:3 Not tainted 6.1.40-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023\nWorkqueue: events_power_efficient gc_worker\nRIP: 0010:sk_mc_loop+0x165/0x260 net/core/sock.c:782\nCode: 34 1b fd 49 81 c7 18 05 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 25 36 6d fd 4d 8b 37 eb 13 e8 db 33 1b fd <0f> 0b b3 01 eb 34 e8 d0 33 1b fd 45 31 f6 49 83 c6 38 4c 89 f0 48\nRSP: 0018:ffffc90000388530 EFLAGS: 00010246\nRAX: ffffffff846d9b55 RBX: 0000000000000011 RCX: ffff88814f884980\nRDX: 0000000000000102 RSI: ffffffff87ae5160 RDI: 0000000000000011\nRBP: ffffc90000388550 R08: 0000000000000003 R09: ffffffff846d9a65\nR10: 0000000000000002 R11: ffff88814f884980 R12: dffffc0000000000\nR13: ffff88810dbee000 R14: 0000000000000010 R15: ffff888150084000\nFS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020000180 CR3: 000000014ee5b000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<IRQ>\n[<ffffffff8507734f>] ip6_finish_output2+0x33f/0x1ae0 net/ipv6/ip6_output.c:83\n[<ffffffff85062766>] __ip6_finish_output net/ipv6/ip6_output.c:200 [inline]\n[<ffffffff85062766>] ip6_finish_output+0x6c6/0xb10 net/ipv6/ip6_output.c:211\n[<ffffffff85061f8c>] NF_HOOK_COND include/linux/netfilter.h:298 [inline]\n[<ffffffff85061f8c>] ip6_output+0x2bc/0x3d0 net/ipv6/ip6_output.c:232\n[<ffffffff852071cf>] dst_output include/net/dst.h:444 [inline]\n[<ffffffff852071cf>] ip6_local_out+0x10f/0x140 net/ipv6/output_core.c:161\n[<ffffffff83618fb4>] ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:483 [inline]\n[<ffffffff83618fb4>] ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:529 [inline]\n[<ffffffff83618fb4>] ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:602 [inline]\n[<ffffffff83618fb4>] ipvlan_queue_xmit+0x1174/0x1be0 drivers/net/ipvlan/ipvlan_core.c:677\n[<ffffffff8361ddd9>] ipvlan_start_xmit+0x49/0x100 drivers/net/ipvlan/ipvlan_main.c:229\n[<ffffffff84763fc0>] netdev_start_xmit include/linux/netdevice.h:4925 [inline]\n[<ffffffff84763fc0>] xmit_one net/core/dev.c:3644 [inline]\n[<ffffffff84763fc0>] dev_hard_start_xmit+0x320/0x980 net/core/dev.c:3660\n[<ffffffff8494c650>] sch_direct_xmit+0x2a0/0x9c0 net/sched/sch_generic.c:342\n[<ffffffff8494d883>] qdisc_restart net/sched/sch_generic.c:407 [inline]\n[<ffffffff8494d883>] __qdisc_run+0xb13/0x1e70 net/sched/sch_generic.c:415\n[<ffffffff8478c426>] qdisc_run+0xd6/0x260 include/net/pkt_sched.h:125\n[<ffffffff84796eac>] net_tx_action+0x7ac/0x940 net/core/dev.c:5247\n[<ffffffff858002bd>] __do_softirq+0x2bd/0x9bd kernel/softirq.c:599\n[<ffffffff814c3fe8>] invoke_softirq kernel/softirq.c:430 [inline]\n[<ffffffff814c3fe8>] __irq_exit_rcu+0xc8/0x170 kernel/softirq.c:683\n[<ffffffff814c3f09>] irq_exit_rcu+0x9/0x20 kernel/softirq.c:695"
    }
  ],
  "lastModified": "2026-06-17T06:46:08.910",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}