« Volver al listado

CVE-2026-43301

Estado: AnalizadaMedia (5.5)—

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

media: chips-media: wave5: Fix PM runtime usage count underflow

Replace pm_runtime_put_sync() with pm_runtime_dont_use_autosuspend() in the remove path to properly pair with pm_runtime_use_autosuspend() from probe. This allows pm_runtime_disable() to handle reference count cleanup correctly regardless of current suspend state.

The driver calls pm_runtime_put_sync() unconditionally in remove, but the device may already be suspended due to autosuspend configured in probe. When autosuspend has already suspended the device, the usage count is 0, and pm_runtime_put_sync() decrements it to -1.

Leer descripción completaMostrar menos

This causes the following warning on module unload:

Detalles técnicos trazas, registros y código del informe original
  ------------[ cut here ]------------
  WARNING: CPU: 1 PID: 963 at kernel/kthread.c:1430
    kthread_destroy_worker+0x84/0x98
  ...
  vdec 30210000.video-codec: Runtime PM usage count underflow!

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-43301",
  "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": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "9707a6254a8a6b978bde811a44fe07d86c229d1c",
              "lessThan": "3a278a55ead50db2444c8f01410c7f5a68723990",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9707a6254a8a6b978bde811a44fe07d86c229d1c",
              "lessThan": "0bffda02317989f8d5cdc2d4462a4110b1290cf0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9707a6254a8a6b978bde811a44fe07d86c229d1c",
              "lessThan": "9cf4452e824c1e2d41c9c0b13cc8a32a0a7dec38",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/media/platform/chips-media/wave5/wave5-vpu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/media/platform/chips-media/wave5/wave5-vpu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-05-08T14:16:37.340",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0bffda02317989f8d5cdc2d4462a4110b1290cf0",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3a278a55ead50db2444c8f01410c7f5a68723990",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9cf4452e824c1e2d41c9c0b13cc8a32a0a7dec38",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-191"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Fix PM runtime usage count underflow\n\nReplace pm_runtime_put_sync() with pm_runtime_dont_use_autosuspend() in\nthe remove path to properly pair with pm_runtime_use_autosuspend() from\nprobe. This allows pm_runtime_disable() to handle reference count cleanup\ncorrectly regardless of current suspend state.\n\nThe driver calls pm_runtime_put_sync() unconditionally in remove, but the\ndevice may already be suspended due to autosuspend configured in probe.\nWhen autosuspend has already suspended the device, the usage count is 0,\nand pm_runtime_put_sync() decrements it to -1.\n\nThis causes the following warning on module unload:\n\n  ------------[ cut here ]------------\n  WARNING: CPU: 1 PID: 963 at kernel/kthread.c:1430\n    kthread_destroy_worker+0x84/0x98\n  ...\n  vdec 30210000.video-codec: Runtime PM usage count underflow!"
    }
  ],
  "lastModified": "2026-06-17T10:49:20.490",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "12C05E5A-F731-4E9B-94E0-2E3F7FBA69A3",
              "versionEndExcluding": "6.18.16",
              "versionStartIncluding": "6.8"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67",
              "versionEndExcluding": "6.19.6",
              "versionStartIncluding": "6.19"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}