CVE-2022-50441

Estado: AnalizadaMedia (5.5)—

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

net/mlx5: Lag, fix failure to cancel delayed bond work

Commit 0d4e8ed139d8 ("net/mlx5: Lag, avoid lockdep warnings") accidentally removed a call to cancel delayed bond work thus it may cause queued delay to expire and fall on an already destroyed work queue.

Fix by restoring the call cancel_delayed_work_sync() before destroying the workqueue.

This prevents call trace such as this:

Detalles técnicos trazas, registros y código del informe original

[  329.230417] BUG: kernel NULL pointer dereference, address: 0000000000000000
 [  329.231444] #PF: supervisor write access in kernel mode
 [  329.232233] #PF: error_code(0x0002) - not-present page
 [  329.233007] PGD 0 P4D 0
 [  329.233476] Oops: 0002 [#1] SMP
 [  329.234012] CPU: 5 PID: 145 Comm: kworker/u20:4 Tainted: G OE      6.0.0-rc5_mlnx #1
 [  329.235282] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
 [  329.236868] Workqueue: mlx5_cmd_0000:08:00.1 cmd_work_handler [mlx5_core]
 [  329.237886] RIP: 0010:_raw_spin_lock+0xc/0x20
 [  329.238585] Code: f0 0f b1 17 75 02 f3 c3 89 c6 e9 6f 3c 5f ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <f0> 0f b1 17 75 02 f3 c3 89 c6 e9 45 3c 5f ff 0f 1f 44 00 00 0f 1f
 [  329.241156] RSP: 0018:ffffc900001b0e98 EFLAGS: 00010046
 [  329.241940] RAX: 0000000000000000 RBX: ffffffff82374ae0 RCX: 0000000000000000
 [  329.242954] RDX: 0000000000000001 RSI: 0000000000000014 RDI: 0000000000000000
 [  329.243974] RBP: ffff888106ccf000 R08: ffff8881004000c8 R09: ffff888100400000
 [  329.244990] R10: 0000000000000000 R11: ffffffff826669f8 R12: 0000000000002000
 [  329.246009] R13: 0000000000000005 R14: ffff888100aa7ce0 R15: ffff88852ca80000
 [  329.247030] FS:  0000000000000000(0000) GS:ffff88852ca80000(0000) knlGS:0000000000000000
 [  329.248260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [  329.249111] CR2: 0000000000000000 CR3: 000000016d675001 CR4: 0000000000770ee0
 [  329.250133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 [  329.251152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 [  329.252176] PKRU: 55555554

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.15%
Percentil entre todas las CVEs puntuadas: 4
Fecha de la puntuación: 5/10/2026

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)

Linux — Linux Kernel

CWE

CWE-476

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-50441",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "lessThan": "5df57bb04e91add52fb67e226209df9a17f06a89",
              "versionType": "git"
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              "lessThan": "4d1c1379d71777ddeda3e54f8fc26e9ecbfd1009",
              "versionType": "git"
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            {
              "status": "affected",
              "version": "6.0.13",
              "lessThan": "6.0.19",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
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            {
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              "version": "0",
              "lessThan": "6.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.0.19",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-01T12:15:36.300",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4d1c1379d71777ddeda3e54f8fc26e9ecbfd1009",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5df57bb04e91add52fb67e226209df9a17f06a89",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8f1b8b3133504bf9125ee507ddcc3a8fb41a41f0",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Lag, fix failure to cancel delayed bond work\n\nCommit 0d4e8ed139d8 (\"net/mlx5: Lag, avoid lockdep warnings\")\naccidentally removed a call to cancel delayed bond work thus it may\ncause queued delay to expire and fall on an already destroyed work\nqueue.\n\nFix by restoring the call cancel_delayed_work_sync() before\ndestroying the workqueue.\n\nThis prevents call trace such as this:\n\n[  329.230417] BUG: kernel NULL pointer dereference, address: 0000000000000000\n [  329.231444] #PF: supervisor write access in kernel mode\n [  329.232233] #PF: error_code(0x0002) - not-present page\n [  329.233007] PGD 0 P4D 0\n [  329.233476] Oops: 0002 [#1] SMP\n [  329.234012] CPU: 5 PID: 145 Comm: kworker/u20:4 Tainted: G OE      6.0.0-rc5_mlnx #1\n [  329.235282] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n [  329.236868] Workqueue: mlx5_cmd_0000:08:00.1 cmd_work_handler [mlx5_core]\n [  329.237886] RIP: 0010:_raw_spin_lock+0xc/0x20\n [  329.238585] Code: f0 0f b1 17 75 02 f3 c3 89 c6 e9 6f 3c 5f ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <f0> 0f b1 17 75 02 f3 c3 89 c6 e9 45 3c 5f ff 0f 1f 44 00 00 0f 1f\n [  329.241156] RSP: 0018:ffffc900001b0e98 EFLAGS: 00010046\n [  329.241940] RAX: 0000000000000000 RBX: ffffffff82374ae0 RCX: 0000000000000000\n [  329.242954] RDX: 0000000000000001 RSI: 0000000000000014 RDI: 0000000000000000\n [  329.243974] RBP: ffff888106ccf000 R08: ffff8881004000c8 R09: ffff888100400000\n [  329.244990] R10: 0000000000000000 R11: ffffffff826669f8 R12: 0000000000002000\n [  329.246009] R13: 0000000000000005 R14: ffff888100aa7ce0 R15: ffff88852ca80000\n [  329.247030] FS:  0000000000000000(0000) GS:ffff88852ca80000(0000) knlGS:0000000000000000\n [  329.248260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [  329.249111] CR2: 0000000000000000 CR3: 000000016d675001 CR4: 0000000000770ee0\n [  329.250133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n [  329.251152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n [  329.252176] PKRU: 55555554"
    }
  ],
  "lastModified": "2026-06-17T05:23:33.837",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BCD18A91-D1A8-44BB-95B8-9E9E5E00BD65",
              "versionEndExcluding": "6.0.19",
              "versionStartIncluding": "6.0.13"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B481431F-04AD-47A6-BBBD-473D831BA851",
              "versionEndExcluding": "6.1.5",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DE093B34-F4CD-4052-8122-730D6537A91A"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8"
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            {
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              "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}