CVE-2026-68276
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 versions
Linux kernel versions
6.12
and later are affected. Fixed in
6.12.103,
6.18.42,
7.1.6,
7.2
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-68276?
CVE-2026-68276 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.103, 6.18.42, 7.1.6 and others. CVE-2026-68276 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-68276?
Yes. CVE-2026-68276 has been patched. Fixed versions include 6.12.103, 6.18.42, 7.1.6 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-68276 actively exploited?
No. CVE-2026-68276 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.