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Linux kernel 6.6.159.1-1 may crash due to memory error
published 1 month ago
Summary
The Linux kernel version 6.6.159.1-1 has a coding mistake that can leave a reference to memory that has already been released. This can cause the system to become unstable or crash. Apply the latest kernel updates that include the fix to avoid the issue.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Azure Linux:3 | – | kernel |
<= 6.6.159.1-1 <= 6.6.157.1-1 |
| Azure Linux:3 | azure | kernel | <= 6.6.150.1-1 |
Original advisory text
CVE-2026-93176 affecting package kernel 6.6.159.1-1
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix dangling pointer in plane reset function
amdgpu_dm_plane_drm_plane_reset() frees the old state before allocating
a new one. If kzalloc() fails, the function returns without updating
the state pointer, leaving a dangling pointer to already freed memory.
Fix this by allocating the new state first. On allocation failure, the
old state remains untouched and the function safely returns.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[adjust for movement around current amd-staging-drm-next]
drm/amd/display: Fix dangling pointer in plane reset function
amdgpu_dm_plane_drm_plane_reset() frees the old state before allocating
a new one. If kzalloc() fails, the function returns without updating
the state pointer, leaving a dangling pointer to already freed memory.
Fix this by allocating the new state first. On allocation failure, the
old state remains untouched and the function safely returns.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[adjust for movement around current amd-staging-drm-next]
References
Timeline
Published17 Sep 2026
Updated1 Nov 2026
First seen23 Sep 2026
Sources
AZL-102836 · OSV
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