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7.8
CVE-2024-56775: Linux Kernel: AMD Display Plane Refcount Issue Fixed
CVE-2024-56775
Summary
A bug in the Linux kernel's AMD display driver was solved, preventing potential memory leaks and crashes. This fix ensures that plane states are restored correctly, maintaining accurate refcounts. Linux users should be up-to-date with the latest kernel patches to benefit from this fix.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel |
< 6.12.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Original title
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix handling of plane refcount
[Why]
The mechanism to backup and restore plane states doesn't maintain
refcoun...
Original description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix handling of plane refcount
[Why]
The mechanism to backup and restore plane states doesn't maintain
refcount, which can cause issues if the refcount of the plane changes
in between backup and restore operations, such as memory leaks if the
refcount was supposed to go down, or double frees / invalid memory
accesses if the refcount was supposed to go up.
[How]
Cache and re-apply current refcount when restoring plane states.
drm/amd/display: Fix handling of plane refcount
[Why]
The mechanism to backup and restore plane states doesn't maintain
refcount, which can cause issues if the refcount of the plane changes
in between backup and restore operations, such as memory leaks if the
refcount was supposed to go down, or double frees / invalid memory
accesses if the refcount was supposed to go up.
[How]
Cache and re-apply current refcount when restoring plane states.
nvd CVSS3.1
7.8
Vulnerability type
CWE-401
Memory Leak
CWE-415
Published: 8 Jan 2025 · Updated: 23 Jul 2026 · First seen: 7 Mar 2026