CVE-2026-68233

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Shut down BO cache timer before teardown The BO cache timer callback schedules time_work, and time_work can rearm the timer through vc4_bo_cache_free_old(). vc4_bo_cache_destroy() deletes the timer and then cancels the work, which does not break that cycle: the work being cancelled can rearm the timer, and the timer then queues work again after teardown. Use timer_shutdown_sync() instead, so the timer cannot be rearmed and the cycle ends with cancel_work_sync().

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-08-10 13:20:11.600000

Last modified

2026-10-30 13:19:41.720000

View original CVE JSON

{
  "id": "CVE-2026-68233",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-08-10T13:20:11.600",
  "lastModified": "2026-10-30T13:19:41.720",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: Shut down BO cache timer before teardown\n\nThe BO cache timer callback schedules time_work, and time_work can rearm\nthe timer through vc4_bo_cache_free_old().\n\nvc4_bo_cache_destroy() deletes the timer and then cancels the work, which\ndoes not break that cycle: the work being cancelled can rearm the timer,\nand the timer then queues work again after teardown.\n\nUse timer_shutdown_sync() instead, so the timer cannot be rearmed and the\ncycle ends with cancel_work_sync()."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/drm/vc4/vc4_bo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "948cd4876dafbfab826384516df19fe813d9f1d1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "cf55c6f1b62a89bf365c48bf731ccf69340e3a16",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "e9264ee59bd94970b80b7548f693bccf0d4628da",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "a38f2724eb93a78ba250b01e0caf3468df4d3956",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "bac4c1a9af690b8635c6924872075c41d8763ed9",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c826a6e1064419f78855463cf29ce9e8b9d25bf4",
              "lessThan": "6273dd3ffb54ec581855b82ae77331b66028249c",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/drm/vc4/vc4_bo.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.5",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.5",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.42",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1.6",
              "lessThanOrEqual": "7.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6273dd3ffb54ec581855b82ae77331b66028249c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/948cd4876dafbfab826384516df19fe813d9f1d1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a38f2724eb93a78ba250b01e0caf3468df4d3956",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bac4c1a9af690b8635c6924872075c41d8763ed9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cf55c6f1b62a89bf365c48bf731ccf69340e3a16",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e9264ee59bd94970b80b7548f693bccf0d4628da",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}