CVE-2025-21995: drm/sched: Fix fence reference count leak
First published: Thu Apr 03 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/sched: Fix fence reference count leak The last_scheduled fence leaks when an entity is being killed and adding the cleanup callback fails. Decrement the reference count of prev when dma_fence_add_callback() fails, ensuring proper balance. [phasta: add git tag info for stable kernel]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=6.2<6.6.85 | |
| Linux Kernel | >=6.7<6.12.21 | |
| Linux Kernel | >=6.13<6.13.9 | |
| Linux Kernel | =6.14-rc1 | |
| Linux Kernel | =6.14-rc2 | |
| Linux Kernel | =6.14-rc3 | |
| Linux Kernel | =6.14-rc4 | |
| Linux Kernel | =6.14-rc5 | |
| Linux Kernel | =6.14-rc6 | |
| Linux Kernel | =6.14-rc7 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21995?
CVE-2025-21995 is classified as a low severity vulnerability within the Linux kernel.
How do I fix CVE-2025-21995?
To fix CVE-2025-21995, you should update to the latest version of the Linux kernel that contains the patch for this vulnerability.
What systems are affected by CVE-2025-21995?
CVE-2025-21995 affects various versions of the Linux kernel.
What type of vulnerability is CVE-2025-21995?
CVE-2025-21995 is a code execution vulnerability due to a fence reference count leak.
Is there a public exploit for CVE-2025-21995?
As of now, there are no known public exploits specifically targeting CVE-2025-21995.
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