DocumentationOverview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
media: zoran: Avoid freeing a registered video_device twice
zoran_init_video_device() installs zoran_vdev_release() as the video_device release callback through zoran_template. After video_register_device() succeeds, video_unregister_device() drops the registered video_device reference and the V4L2 core eventually invokes that release callback, which kfree()s the video_device.
zoran_exit_video_devices() called video_unregister_device() and then kfree(zr->video_dev), so device teardown could free the same video_device twice.
Remove the direct kfree() and clear the cached pointer after unregistering. The pre-registration failure path keeps its manual free because the video_device was not registered there.
This issue was found by a static analysis checker and confirmed by manual source review.
Details
- Affected product:
- Debian 11 ELS
- Affected packages:
- linux @ 5.10.259
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 12 | Planned | — |
| Debian 13 | Will Not Fix |
17 kernels
|