{"id":"CVE-2026-43189","title":"media: v4l2-async: Fix error handling on steps after finding a match","summary":"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 (i…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 30aaed311f973f13ba13a0cd2dc0202f595fff48","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 461733d83e67ba7e3a5b750c0d203f738e01244f","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < b02bcb378efa8af07827f49b3afcc5e825318c55","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 2de0a3c8148fc3dbea21981e6569f550b3626119","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 7345d6d356336c448d6b9230ed8704f39679fd12","Linux 6.6"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:30:30.833413Z"},"published":"2026-05-06","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:32:35.703Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43189","references":[{"url":"https://git.kernel.org/stable/c/30aaed311f973f13ba13a0cd2dc0202f595fff48"},{"url":"https://git.kernel.org/stable/c/461733d83e67ba7e3a5b750c0d203f738e01244f"},{"url":"https://git.kernel.org/stable/c/b02bcb378efa8af07827f49b3afcc5e825318c55"},{"url":"https://git.kernel.org/stable/c/2de0a3c8148fc3dbea21981e6569f550b3626119"},{"url":"https://git.kernel.org/stable/c/7345d6d356336c448d6b9230ed8704f39679fd12"}],"tags":["cve.org"],"epss":0.00127,"epssPercentile":0.02429,"ingestedAt":"2026-11-06T15:54:04.009Z","slug":"CVE-2026-43189","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 30aaed311f973f13ba13a0cd2dc0202f595fff48`\n- `Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 461733d83e67ba7e3a5b750c0d203f738e01244f`\n- `Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < b02bcb378efa8af07827f49b3afcc5e825318c55`\n- `Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 2de0a3c8148fc3dbea21981e6569f550b3626119`\n- `Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 7345d6d356336c448d6b9230ed8704f39679fd12`\n- `Linux 6.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}