CVE-2026-68276drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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)
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d361ad5d2fc0e4d59d5d538092c9b37889756642 before 201633f47b542a99bb7baafdfcda7781249fb3d9; from d361ad5d2fc0e4d59d5d538092c9b37889756642 before e28420e36542ae8b66a5bdcec419525f521bddf8; from d361ad5d2fc0e4d59d5d538092c9b37889756642 before 9cd9a983769a4d0e9cc80a287316ee79685d38b3; from d361ad5d2fc0e4d59d5d538092c9b37889756642 before 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 | CNA record |
References
- https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9
- https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8
- https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3
- https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.