{"id":"CVE-2026-89871","published":"2026-09-16T11:16:55.287","lastModified":"2026-09-16T11:16:55.287","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0e7f2cd72a4f9268ee09a13b13f3339e7cc71557","tags":[]},{"url":"https://git.kernel.org/stable/c/0fac63cac6689588da530764ccb6ba55ee8e4d8b","tags":[]},{"url":"https://git.kernel.org/stable/c/3d1b10d81fe54852ed953f4129577b733bbd6907","tags":[]},{"url":"https://git.kernel.org/stable/c/52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6","tags":[]},{"url":"https://git.kernel.org/stable/c/5c35d380bea60503c4fe0986fe1de6a3263282b3","tags":[]},{"url":"https://git.kernel.org/stable/c/76e379754ba618989f6215be608d5c04774a611d","tags":[]},{"url":"https://git.kernel.org/stable/c/968c5213e34c48d35febdfd09cf3dc58ad039140","tags":[]},{"url":"https://git.kernel.org/stable/c/db0f4531aa55cfb0171684ebfffe3ff04b79d5a8","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}