What happened
In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix error return when vfs_mkdir() fails When vfs_mkdir() fails, the error code is not extracted from the returned error pointer. This causes mkdir_error to be reached with ret=0, which leads to returning ERR_PTR(0) (NULL) instead of a proper error pointer. Fix this by extracting the error code from the error pointer when vfs_mkdir() fails.
Affected versions
Linux: 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed through before 0940108d27c6995e02819ff832be11892f0b208b (git); 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed through before 8a220d1c312c66194f4a33dd52d1fba42bc2b341 (git); 6.15 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.