CVE-2026-43486 arm64: contpte: fix set_access_flags() no-op check for SMMU/ATS faults

In the Linux kernel, the following vulnerability has been resolved: arm64: contpte: fix setaccessflags no-op check for SMMU/ATS faults contpteptepsetaccessflags compared the gathered ptepget value against the requested entry to detect no-ops. ptepget ORs AF/dirty from all sub-PTEs in the CONT...

PT-2026-40693

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the arm64 architecture where the contpte ptep set access flags function incorrectly detects no-op operations by comparing a gathered ptep get value against the request...