AZL-83378
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-83378.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-83378
- Upstream
- Published
- 2026-04-22T14:16:43Z
- Modified
- 2026-08-28T17:47:51Z
- Summary
- CVE-2026-31473 affecting package kernel for versions less than 6.6.134.1-2
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex
MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0) queue teardown paths. This can race request object cleanup against vb2 queue cancellation and lead to use-after-free reports.
We already serialize request queueing against STREAMON/OFF with req_queue_mutex. Extend that serialization to REQBUFS, and also take the same mutex in media_request_ioctl_reinit() so REINIT is in the same exclusion domain.
This keeps request cleanup and queue cancellation from running in parallel for request-capable devices.
- References