Description (CNA)
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]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5d945cbcd4b16a29d6470a80dfb19738f9a4319f before cda8af27b787d79eadc4eb8109d9f2e856dadac2; affected 5d945cbcd4b16a29d6470a80dfb19738f9a4319f before 0999a267bdc13648b6b0db893e7eabe30bc13e7c; affected 5d945cbcd4b16a29d6470a80dfb19738f9a4319f before 3d8391d3149a1aeb93505a4f9fb9ed8364882c42; affected 5d945cbcd4b16a29d6470a80dfb19738f9a4319f before 80c0f51aced43d6eaf72f95a2833b0a77cf7880d; affected 5d945cbcd4b16a29d6470a80dfb19738f9a4319f before 98cad4bd1443975d972f4c7f705980da03722a22 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.57 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/cda8af27b787d79eadc4eb8109d9f2e856dadac2
- https://git.kernel.org/stable/c/0999a267bdc13648b6b0db893e7eabe30bc13e7c
- https://git.kernel.org/stable/c/3d8391d3149a1aeb93505a4f9fb9ed8364882c42
- https://git.kernel.org/stable/c/80c0f51aced43d6eaf72f95a2833b0a77cf7880d
- https://git.kernel.org/stable/c/98cad4bd1443975d972f4c7f705980da03722a22