Description (CNA)
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)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d361ad5d2fc0e4d59d5d538092c9b37889756642 before 201633f47b542a99bb7baafdfcda7781249fb3d9; affected d361ad5d2fc0e4d59d5d538092c9b37889756642 before e28420e36542ae8b66a5bdcec419525f521bddf8; affected d361ad5d2fc0e4d59d5d538092c9b37889756642 before 9cd9a983769a4d0e9cc80a287316ee79685d38b3; affected d361ad5d2fc0e4d59d5d538092c9b37889756642 before 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.12.103 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.