Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is 0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a kernel page fault.
The IB only needs to be a minimal NOP shell to schedule the job; the cleaner shader itself is emitted on the ring via emit_cleaner_shader(). Fill 16 dwords to match the allocation.
v2: Use ib_size_dw variable (Lijo)
(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d361ad5d2fc0e4d59d5d538092c9b37889756642, < 201633f47b542a99bb7baafdfcda7781249fb3d9; >= d361ad5d2fc0e4d59d5d538092c9b37889756642, < e28420e36542ae8b66a5bdcec419525f521bddf8; >= d361ad5d2fc0e4d59d5d538092c9b37889756642, < 9cd9a983769a4d0e9cc80a287316ee79685d38b3; >= d361ad5d2fc0e4d59d5d538092c9b37889756642, < 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 |
| Linux | Linux | 6.12 |
References
Timeline
- Published
- Aug 10, 2026
- Last modified
- Aug 17, 2026
- NVD status
- Received