CVE-2026-31473

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex<br /> <br /> MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0)<br /> queue teardown paths. This can race request object cleanup against vb2<br /> queue cancellation and lead to use-after-free reports.<br /> <br /> We already serialize request queueing against STREAMON/OFF with<br /> req_queue_mutex. Extend that serialization to REQBUFS, and also take<br /> the same mutex in media_request_ioctl_reinit() so REINIT is in the<br /> same exclusion domain.<br /> <br /> This keeps request cleanup and queue cancellation from running in<br /> parallel for request-capable devices.