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FKIE_CVE-2026-93101

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-async: Unregister sub-device if asc_list is empty When my em28xx USB device that uses the i2c tvp5150 driver is disconnected, it crashes. The cause is that the tvp5150 i2c module uses v4l2_async, but the em28xx driver does not since it predates v4l2_async. In that corner case sd->asc_list is empty, so v4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev(). Modify the code so that, if sd->asc_list is empty, v4l2_device_unregister_subdev() is still called.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e72f13d58c4245c177a9d5f54579345554f354d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fb74dce5c650cb23b60f6ba0ffcd5024e948a75
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7201bd08cad791858337e33ffcd90d8ae4147c2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e190320cebe921f99973c984ac53f317061a011f
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/v4l2-core/v4l2-async.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c7201bd08cad791858337e33ffcd90d8ae4147c2",
              "status": "affected",
              "version": "28a1295795d85a25f2e7dd391c43969e95fcb341",
              "versionType": "git"
            },
            {
              "lessThan": "e190320cebe921f99973c984ac53f317061a011f",
              "status": "affected",
              "version": "28a1295795d85a25f2e7dd391c43969e95fcb341",
              "versionType": "git"
            },
            {
              "lessThan": "65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32",
              "status": "affected",
              "version": "28a1295795d85a25f2e7dd391c43969e95fcb341",
              "versionType": "git"
            },
            {
              "lessThan": "9fb74dce5c650cb23b60f6ba0ffcd5024e948a75",
              "status": "affected",
              "version": "28a1295795d85a25f2e7dd391c43969e95fcb341",
              "versionType": "git"
            },
            {
              "lessThan": "4e72f13d58c4245c177a9d5f54579345554f354d",
              "status": "affected",
              "version": "28a1295795d85a25f2e7dd391c43969e95fcb341",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/v4l2-core/v4l2-async.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-async: Unregister sub-device if asc_list is empty\n\nWhen my em28xx USB device that uses the i2c tvp5150 driver is\ndisconnected, it crashes.\n\nThe cause is that the tvp5150 i2c module uses v4l2_async, but\nthe em28xx driver does not since it predates v4l2_async.\n\nIn that corner case sd-\u003easc_list is empty, so\nv4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev().\n\nModify the code so that, if sd-\u003easc_list is empty,\nv4l2_device_unregister_subdev() is still called."
    }
  ],
  "id": "CVE-2026-93101",
  "lastModified": "2026-09-17T17:18:04.357",
  "metrics": {},
  "published": "2026-09-17T17:18:04.357",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4e72f13d58c4245c177a9d5f54579345554f354d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9fb74dce5c650cb23b60f6ba0ffcd5024e948a75"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c7201bd08cad791858337e33ffcd90d8ae4147c2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e190320cebe921f99973c984ac53f317061a011f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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