CVE-2025-38004

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved, related to the CAN broadcast manager (CAN BCM). The CAN BCM can send a sequence of CAN frames via hrtimer, and the content and length of the sequence can be changed at runtime. However, updates to the 'currframe' counter can be triggered from user space and hrtimer context, potentially leading to a slab-out-of-bounds read access. A proof of concept was created, demonstrating the vulnerability, which can be prevented with a spin lock bh. The 'count' variable has been moved into a protected section to prevent modification from both contexts.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.