CVE-2025-21798: firewire: test: Fix potential null dereference in firewire kunit test
First published: Thu Feb 27 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| >=6.8<6.12.13 | ||
| >=6.13<6.13.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21798?
CVE-2025-21798 is classified as a medium severity vulnerability due to the potential for a NULL dereference in the Linux kernel.
How do I fix CVE-2025-21798?
To fix CVE-2025-21798, users should upgrade to the latest Linux kernel version where this vulnerability has been addressed.
What could happen if CVE-2025-21798 is exploited?
Exploiting CVE-2025-21798 could result in a system crash or unexpected behavior due to a NULL pointer dereference.
Which versions of the Linux kernel are affected by CVE-2025-21798?
CVE-2025-21798 affects previous versions of the Linux kernel prior to the patch that mitigates the vulnerability.
What specific area of the Linux kernel is impacted by CVE-2025-21798?
CVE-2025-21798 impacts the FireWire subsystem and specifically the kunit testing framework within the Linux kernel.
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