Bug 2348508 (CVE-2025-21775)

Summary: CVE-2025-21775 kernel: can: ctucanfd: handle skb allocation failure
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-27 03:01:11 UTC 
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.
Comment 1 Michal Findra 2025-02-27 11:10:31 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022606-CVE-2025-21775-3137@gregkh/T