CVE-2026-68276

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdgpu/gfx: fix cleaner shader IB buffer overflow<br /> <br /> The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but<br /> incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is<br /> 0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a<br /> kernel page fault.<br /> <br /> The IB only needs to be a minimal NOP shell to schedule the job; the<br /> cleaner shader itself is emitted on the ring via emit_cleaner_shader().<br /> Fill 16 dwords to match the allocation.<br /> <br /> v2: Use ib_size_dw variable (Lijo)<br /> <br /> (cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)