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CVE-2026-43189

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-async: Fix error handling on steps after finding a match Once an async connection is found to be matching with an fwnode, a sub-device may be registered (in case it wasn't already), its bound operation is called, ancillary links are created, the async connection is added to the sub-device's list of connections and removed from the global waiting connection list. Further on, the sub-device's possible own notifier is searched for possible additional matches. Fix these specific issues: - If v4l2_async_match_notify() failed before the sub-notifier handling, the async connection was unbound and its entry removed from the sub-device's async connection list. The latter part was also done in v4l2_async_match_notify(). - The async connection's sd field was only set after creating ancillary links in v4l2_async_match_notify(). It was however dereferenced in v4l2_async_unbind_subdev_one(), which was called on error path of v4l2_async_match_notify() failure.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-06 12:16:37.723000
Last modified
2026-11-06 16:18:27.643000
View original CVE JSON 
{
  "id": "CVE-2026-43189",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-05-06T12:16:37.723",
  "lastModified": "2026-11-06T16:18:27.643",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-async: Fix error handling on steps after finding a match\n\nOnce an async connection is found to be matching with an fwnode, a\nsub-device may be registered (in case it wasn't already), its bound\noperation is called, ancillary links are created, the async connection\nis added to the sub-device's list of connections and removed from the\nglobal waiting connection list. Further on, the sub-device's possible own\nnotifier is searched for possible additional matches.\n\nFix these specific issues:\n\n- If v4l2_async_match_notify() failed before the sub-notifier handling,\n  the async connection was unbound and its entry removed from the\n  sub-device's async connection list. The latter part was also done in\n  v4l2_async_match_notify().\n\n- The async connection's sd field was only set after creating ancillary\n  links in v4l2_async_match_notify(). It was however dereferenced in\n  v4l2_async_unbind_subdev_one(), which was called on error path of\n  v4l2_async_match_notify() failure."
    }
  ],
  "affected": [
    {
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      "affectedData": [
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          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/media/v4l2-core/v4l2-async.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            },
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              "version": "6.19.6",
              "lessThanOrEqual": "6.19.*",
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            },
            {
              "version": "7.0",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
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      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
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          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "role": "CISA Coordinator",
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      "source": "[email protected]",
      "type": "Primary",
      "description": [
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          "value": "NVD-CWE-noinfo"
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}