{"id":"CVE-2026-89871","revision":"854f53fa23594d459207ce441f1b3f0a","records":[{"revision":"854f53fa23594d459207ce441f1b3f0a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89871","aliases":[],"title":"media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure\n\nkthread_run() returns an ERR_PTR on failure, not NULL.\nWhen start_streaming() fails, data->kthread_vid_cap is left holding\nthis error pointer instead of being cleared.\n\nThis causes two subsequent bugs:\n1. A future call to start_streaming() sees a non-NULL kthread_vid_cap\n   and returns 0 (success) immediately, without actually starting the\n   capture thread.\n2. A call to stop_streaming() checks 'kthread_vid_cap == NULL' which\n   is false for an error pointer, and proceeds to call kthread_stop()\n   on the error pointer, leading to a kernel crash.\n\nFix this by resetting kthread_vid_cap to NULL on failure before\njumping to the error path.","state":0,"publishedAt":"2026-09-16T10:31:39.961+00:00","modifiedAt":"2026-10-19T08:54:04.386+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/i2c/video-i2c.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"db0f4531aa55cfb0171684ebfffe3ff04b79d5a8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"0fac63cac6689588da530764ccb6ba55ee8e4d8b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"5c35d380bea60503c4fe0986fe1de6a3263282b3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"3d1b10d81fe54852ed953f4129577b733bbd6907\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"968c5213e34c48d35febdfd09cf3dc58ad039140\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"0e7f2cd72a4f9268ee09a13b13f3339e7cc71557\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cebaac609744414463d1ecc28fdecd26c1b9bc1\",\n                            \"lessThan\": \"76e379754ba618989f6215be608d5c04774a611d\",\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/i2c/video-i2c.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.18\",\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":[],"references":["https://git.kernel.org/stable/c/db0f4531aa55cfb0171684ebfffe3ff04b79d5a8","https://git.kernel.org/stable/c/0fac63cac6689588da530764ccb6ba55ee8e4d8b","https://git.kernel.org/stable/c/5c35d380bea60503c4fe0986fe1de6a3263282b3","https://git.kernel.org/stable/c/3d1b10d81fe54852ed953f4129577b733bbd6907","https://git.kernel.org/stable/c/968c5213e34c48d35febdfd09cf3dc58ad039140","https://git.kernel.org/stable/c/52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6","https://git.kernel.org/stable/c/0e7f2cd72a4f9268ee09a13b13f3339e7cc71557","https://git.kernel.org/stable/c/76e379754ba618989f6215be608d5c04774a611d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89871","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89871","identifiers":["CVE-2026-89871"]},"retained":false,"historicalAffected":[]}],"coverage":[]}