{"id":"CVE-2026-89893","revision":"f3add43c1b3048a8be6784639018bd3a","records":[{"revision":"f3add43c1b3048a8be6784639018bd3a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89893","aliases":[],"title":"media: cx23885: cancel NetUP CI work before teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: cancel NetUP CI work before teardown\n\nnetup_ci_exit() frees a netup_ci_state while its work item,\nnetup_read_ci_status(), may still be pending or running on the system\nworkqueue. The worker obtains the state with container_of() and\ndereferences it, so it must not outlive the state.\n\nnetup_ci_init() queues the initial status read, and CI GPIO interrupts\nsubsequently queue the same work from netup_ci_slot_status(). During\nremove, cx23885_finidev() calls free_irq() before the CI device is\nunregistered. free_irq() prevents further IRQ handlers from running,\nbut does not drain work queued previously, so the worker can run after\nnetup_ci_exit() frees the state.\n\nCall cancel_work_sync() before dvb_ca_en50221_release() and kfree().\n\nThis issue was found by an in-house static analysis tool.","state":0,"publishedAt":"2026-09-16T10:31:55.374+00:00","modifiedAt":"2026-10-19T08:54:26.213+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/pci/cx23885/cimax2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"aaf76794b870b0f391eff339252a2e2e22f33a4a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"f7ff5adb63c1b277565afa54ccc0924d841b4a52\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"140ecbcbf978fbe60f83f8d4f8b1199029a5c763\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"ec82b0cf7f75fd95802592dcc9560fc7f529bba4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"99cd62b9b1c818d6d01a87be9a8e5796314150a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c184dcd282337c09695a4c1761d7ac77fdc8fb7d\",\n                            \"lessThan\": \"4e143d662ca94888b494b2427fc9e34494eb933a\",\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/pci/cx23885/cimax2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.30\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.30\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\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":[{"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/aaf76794b870b0f391eff339252a2e2e22f33a4a","https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52","https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763","https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4","https://git.kernel.org/stable/c/5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5","https://git.kernel.org/stable/c/bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146","https://git.kernel.org/stable/c/99cd62b9b1c818d6d01a87be9a8e5796314150a2","https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89893","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89893","identifiers":["CVE-2026-89893"]},"retained":false,"historicalAffected":[]}],"coverage":[]}