{"id":"CVE-2026-89871","summary":"media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure","details":"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-\u003ekthread_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.","modified":"2026-09-18T03:48:33.920148251Z","published":"2026-09-16T10:31:39.961Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89871.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0e7f2cd72a4f9268ee09a13b13f3339e7cc71557"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0fac63cac6689588da530764ccb6ba55ee8e4d8b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d1b10d81fe54852ed953f4129577b733bbd6907"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c35d380bea60503c4fe0986fe1de6a3263282b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76e379754ba618989f6215be608d5c04774a611d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/968c5213e34c48d35febdfd09cf3dc58ad039140"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db0f4531aa55cfb0171684ebfffe3ff04b79d5a8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89871.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89871"},{"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":"5cebaac609744414463d1ecc28fdecd26c1b9bc1"},{"fixed":"db0f4531aa55cfb0171684ebfffe3ff04b79d5a8"},{"fixed":"0fac63cac6689588da530764ccb6ba55ee8e4d8b"},{"fixed":"5c35d380bea60503c4fe0986fe1de6a3263282b3"},{"fixed":"3d1b10d81fe54852ed953f4129577b733bbd6907"},{"fixed":"968c5213e34c48d35febdfd09cf3dc58ad039140"},{"fixed":"52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6"},{"fixed":"0e7f2cd72a4f9268ee09a13b13f3339e7cc71557"},{"fixed":"76e379754ba618989f6215be608d5c04774a611d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89871.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.18.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"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-2026-89871.json"}}],"schema_version":"1.9.0"}