{"id":"CVE-2026-89874","revision":"f4e394362d8c4246b881a82b89787b65","records":[{"revision":"f4e394362d8c4246b881a82b89787b65","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89874","aliases":[],"title":"media: v4l2-async: avoid deleting unlinked ASC entry on link error","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.","state":0,"publishedAt":"2026-09-16T10:31:42.054+00:00","modifiedAt":"2026-10-19T08:54:07.245+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/v4l2-core/v4l2-async.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"28a1295795d85a25f2e7dd391c43969e95fcb341\",\n                            \"lessThan\": \"d273571e531405426983c6a45ec635c7d0415eed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"28a1295795d85a25f2e7dd391c43969e95fcb341\",\n                            \"lessThan\": \"caac13f518d83974e9884d1eeda3d4cc3bb92978\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"28a1295795d85a25f2e7dd391c43969e95fcb341\",\n                            \"lessThan\": \"3345746e0957bce6c53644838e4955710a82a962\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"28a1295795d85a25f2e7dd391c43969e95fcb341\",\n                            \"lessThan\": \"a57d94026cb4fd7b3d258f0db2ad391cbccfaba5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"28a1295795d85a25f2e7dd391c43969e95fcb341\",\n                            \"lessThan\": \"47d82b605351c0e04f6365e42c8ffe2fcfdba615\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/v4l2-core/v4l2-async.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d273571e531405426983c6a45ec635c7d0415eed","https://git.kernel.org/stable/c/caac13f518d83974e9884d1eeda3d4cc3bb92978","https://git.kernel.org/stable/c/3345746e0957bce6c53644838e4955710a82a962","https://git.kernel.org/stable/c/a57d94026cb4fd7b3d258f0db2ad391cbccfaba5","https://git.kernel.org/stable/c/47d82b605351c0e04f6365e42c8ffe2fcfdba615"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89874","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89874","identifiers":["CVE-2026-89874"]},"retained":false,"historicalAffected":[]}],"coverage":[]}