Answer in brief
CVE-2026-68276 records a Unknown severity vulnerability in drm/amdgpu/gfx: fix cleaner shader IB buffer overflow. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <201633f47b542a99bb7baafdfcda7781249fb3d9 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <e28420e36542ae8b66a5bdcec419525f521bddf8 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <9cd9a983769a4d0e9cc80a287316ee79685d38b3 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 | 201633f47b542a99bb7baafdfcda7781249fb3d9, e28420e36542ae8b66a5bdcec419525f521bddf8, 9cd9a983769a4d0e9cc80a287316ee79685d38b3, 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68276 records a Unknown severity vulnerability in drm/amdgpu/gfx: fix cleaner shader IB buffer overflow. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <201633f47b542a99bb7baafdfcda7781249fb3d9 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <e28420e36542ae8b66a5bdcec419525f521bddf8 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <9cd9a983769a4d0e9cc80a287316ee79685d38b3 || >=d361ad5d2fc0e4d59d5d538092c9b37889756642 <3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 | 201633f47b542a99bb7baafdfcda7781249fb3d9, e28420e36542ae8b66a5bdcec419525f521bddf8, 9cd9a983769a4d0e9cc80a287316ee79685d38b3, 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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)
Quoted source text, attributed separately from HOL analysis.