{"id":"CVE-2026-89899","revision":"eb931c07f7454860b67635edc695e35e","records":[{"revision":"eb931c07f7454860b67635edc695e35e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89899","aliases":[],"title":"media: cec: disable delayed work before freeing an interrupted transmit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: disable delayed work before freeing an interrupted transmit\n\ncec_transmit_msg_fh() drops adap->lock to wait for a blocking transmit in\nwait_for_completion_killable(). If that wait is interrupted by a signal,\ncancel_delayed_work_sync() can run before the CEC kthread arms the reply\ntimeout via schedule_delayed_work(&data->work) in cec_transmit_done_ts().\nThe work is then armed after the cancel, and the data is freed with its\ndelayed_work still pending:\n\n  ODEBUG: free active (active state 0) object: ... hint: cec_wait_timeout\n\nUse disable_delayed_work_sync(): it cancels the work and disables it, so\nthe later schedule_delayed_work() becomes a no-op and the work cannot be\nre-armed. The data is freed right after, so it need not be re-enabled.","state":0,"publishedAt":"2026-09-16T10:31:59.589+00:00","modifiedAt":"2026-10-19T08:54:32.139+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/cec/core/cec-adap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"490d84f6d73c12f4204241cff8651eed60aae914\",\n                            \"lessThan\": \"9a951931d4b4084acd64fa55fc3672a9da45ddf9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"490d84f6d73c12f4204241cff8651eed60aae914\",\n                            \"lessThan\": \"a3adb63b121937b97f7fdc51e96564c7c799538b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"490d84f6d73c12f4204241cff8651eed60aae914\",\n                            \"lessThan\": \"9c6ceb0949227c1f0cf0e19393daec72d9889871\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"490d84f6d73c12f4204241cff8651eed60aae914\",\n                            \"lessThan\": \"0fbd5c2327020858c45b2d1c65775d64cdeca523\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e448dfd6d3ec944411f6575bc24e4f8baa1e297f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2781b86d7e45de09befa5ace296b66787146561f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4.18.19\",\n                            \"lessThan\": \"4.19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.2\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/cec/core/cec-adap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.20\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/9a951931d4b4084acd64fa55fc3672a9da45ddf9","https://git.kernel.org/stable/c/a3adb63b121937b97f7fdc51e96564c7c799538b","https://git.kernel.org/stable/c/9c6ceb0949227c1f0cf0e19393daec72d9889871","https://git.kernel.org/stable/c/0fbd5c2327020858c45b2d1c65775d64cdeca523"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89899","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89899","identifiers":["CVE-2026-89899"]},"retained":false,"historicalAffected":[]}],"coverage":[]}