{"id":"CVE-2026-89874","published":"2026-09-16T11:16:55.643","lastModified":"2026-09-16T11:16:55.643","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-async: avoid deleting unlinked ASC entry on link error\n\nv4l2_async_match_notify() creates ancillary media links before adding\nasc->asc_subdev_entry to sd->asc_list.\n\nIf ancillary link creation fails, the function jumps to\nerr_call_unbind while asc_subdev_entry has not been linked yet. Async\nconnections are zero-allocated, so the list entry still has NULL next\nand prev pointers on this path. Calling list_del() on it can therefore\ndereference NULL instead of returning the original link creation error.\n\nDo not delete asc_subdev_entry from err_call_unbind. There is no list\ninsertion to undo on this path; the bound callback and sub-device\nregistration are the operations that need to be rolled back.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3345746e0957bce6c53644838e4955710a82a962","tags":[]},{"url":"https://git.kernel.org/stable/c/47d82b605351c0e04f6365e42c8ffe2fcfdba615","tags":[]},{"url":"https://git.kernel.org/stable/c/a57d94026cb4fd7b3d258f0db2ad391cbccfaba5","tags":[]},{"url":"https://git.kernel.org/stable/c/caac13f518d83974e9884d1eeda3d4cc3bb92978","tags":[]},{"url":"https://git.kernel.org/stable/c/d273571e531405426983c6a45ec635c7d0415eed","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}