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)

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No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
d361ad5d2fc0e4d59d5d538092c9b37889756642 affected < 201633f47b542a99bb7baafdfcda7781249fb3d9
d361ad5d2fc0e4d59d5d538092c9b37889756642 affected < e28420e36542ae8b66a5bdcec419525f521bddf8
d361ad5d2fc0e4d59d5d538092c9b37889756642 affected < 9cd9a983769a4d0e9cc80a287316ee79685d38b3
d361ad5d2fc0e4d59d5d538092c9b37889756642 affected < 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3
Linux Linux affected
Version Status Constraints
6.12 affected —
0 unaffected < 6.12
6.12.103 unaffected ≤ 6.12.*
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc1 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9 cve-icon
https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 cve-icon
https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3 cve-icon
https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8 cve-icon
History

Mon, 10 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
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)
Title drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:01:51.789Z

Reserved: 2026-07-30T09:28:09.379Z

Link: CVE-2026-68276

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-10T15:30:05Z

Weaknesses