CVE-2025-21775 Information

Description

In the Linux kernel the following vulnerability has been resolved:

can: ctucanfd: handle skb allocation failure

If skb allocation fails the pointer to struct can_frame is NULL. This is actually handled everywhere inside ctucan_err_interrupt() except for the only place.

Add the missed NULL check.

Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.

Reference

https://git.kernel.org/stable/c/84b9ac59978a6a4e0812d1c938fad97306272cef https://git.kernel.org/stable/c/9bd24927e3eeb85642c7baa3b28be8bea6c2a078 https://git.kernel.org/stable/c/b0e592dd46a0a952b41c3bf6c963afdd6a42b526 https://git.kernel.org/stable/c/e505b83b9ee6aa0ae2f4395f573a66579ae403fb https://git.kernel.org/stable/c/e7e2e2318b1f085044126ba553a4e619842fc36d