kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise

A flaw was found in the Linux kernel's drm/xe/uapi component. This vulnerability allows a Graphics Processing Unit GPU using cohnone coherency mode to bypass CPU caches and read stale sensitive data directly from Dynamic Random-Access Memory DRAM. This can lead to information disclosure, where da...

CVE-2026-46309

A flaw was found in the Linux kernel's drm/xe/uapi component. This vulnerability allows a Graphics Processing Unit GPU using cohnone coherency mode to bypass CPU caches and read stale sensitive data directly from Dynamic Random-Access Memory DRAM. This can lead to information disclosure, where da...