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CVE-2026-43189

media: v4l2-async: Fix error handling on steps after finding a match PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 30aaed311f973f13ba13a0cd2dc0202f595fff48; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 461733d83e67ba7e3a5b750c0d203f738e01244f; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before b02bcb378efa8af07827f49b3afcc5e825318c55; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 2de0a3c8148fc3dbea21981e6569f550b3626119; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 7345d6d356336c448d6b9230ed8704f39679fd12
Linux / Linuxaffected 6.6; unaffected 0 before 6.6; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through *

CWE

No CWE identifiers supplied.

References