CVE-2025-21798: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: firewire: test: Fix potential null dereference in firewire kunit test kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL check may lead to NULL dereference. Add a NULL check for test_state.

Affected products

• Linux Linux Kernel: from 6.8, before 6.12.13 (fixed in 6.12.13); from 6.13, before 6.13.2 (fixed in 6.13.2)

Published 2025-02-27. Last modified 2026-06-17.