{"id":"CVE-2026-89874","summary":"media: v4l2-async: avoid deleting unlinked ASC entry on link error","details":"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-\u003easc_subdev_entry to sd-\u003easc_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.","modified":"2026-09-18T03:48:33.674401797Z","published":"2026-09-16T10:31:42.054Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89874.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3345746e0957bce6c53644838e4955710a82a962"},{"type":"WEB","url":"https://git.kernel.org/stable/c/47d82b605351c0e04f6365e42c8ffe2fcfdba615"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a57d94026cb4fd7b3d258f0db2ad391cbccfaba5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/caac13f518d83974e9884d1eeda3d4cc3bb92978"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d273571e531405426983c6a45ec635c7d0415eed"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89874.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89874"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"28a1295795d85a25f2e7dd391c43969e95fcb341"},{"fixed":"d273571e531405426983c6a45ec635c7d0415eed"},{"fixed":"caac13f518d83974e9884d1eeda3d4cc3bb92978"},{"fixed":"3345746e0957bce6c53644838e4955710a82a962"},{"fixed":"a57d94026cb4fd7b3d258f0db2ad391cbccfaba5"},{"fixed":"47d82b605351c0e04f6365e42c8ffe2fcfdba615"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89874.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89874.json"}}],"schema_version":"1.9.0"}