CVE-2026-53109 powerpc/pgtable-frag: Fix bad page state in pte_frag_destroy

In the Linux kernel, the following vulnerability has been resolved: powerpc/pgtable-frag: Fix bad page state in ptefragdestroy powerpc uses ptfragrefcount as a reference counter for tracking it's pte and pmd page table fragments. For PTE table, in case of Hash with 64K pagesize, we have 16...

PT-2026-52003

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the powerpc architecture's page table fragment management. The system uses pt frag refcount to track page table fragments. When pte free defer is called during madvise...