CVE-2024-57980

In the Linux kernel, the following vulnerability has been resolved:

media: uvcvideo: Fix double free in error path

If the uvc_status_init() function fails to allocate the int_urb, it will free the dev->status pointer but doesn't reset the pointer to NULL. This results in the kfree() call in uvc_status_cleanup() trying to double-free the memory. Fix it by resetting the dev->status pointer to NULL after freeing it.

Reviewed by: Ricardo Ribalda [email protected] ↗

The bug could happen on error path if memory allocation failed. For the Linux Kernel this condition is impossible until system already failed. This type of bugs are complex to trigger (making system out of memory) and considered to affect availability only. The security impact is limited.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent module uvcvideo from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.