{"id":"CVE-2026-89874","title":"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->a…","summary":"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->a…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < d273571e531405426983c6a45ec635c7d0415eed","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < caac13f518d83974e9884d1eeda3d4cc3bb92978","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 3345746e0957bce6c53644838e4955710a82a962","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < a57d94026cb4fd7b3d258f0db2ad391cbccfaba5","Linux >= 28a1295795d85a25f2e7dd391c43969e95fcb341 < 47d82b605351c0e04f6365e42c8ffe2fcfdba615","Linux 6.6"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T11:16:55.643","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89874","references":[{"url":"https://git.kernel.org/stable/c/3345746e0957bce6c53644838e4955710a82a962","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/47d82b605351c0e04f6365e42c8ffe2fcfdba615","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a57d94026cb4fd7b3d258f0db2ad391cbccfaba5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/caac13f518d83974e9884d1eeda3d4cc3bb92978","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d273571e531405426983c6a45ec635c7d0415eed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.986Z","epss":0.002,"epssPercentile":0.10168,"slug":"CVE-2026-89874","body":"## Overview\n\nIn 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.\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":[]}