CVE-2026-63875

CVE-2026-63875 (arm64 Linux kernel) : The issue occurs during unsharing PMD tables in huge_pmd_unshare(), where tlb_unshare_pmd_ptdesc() sets tlb->unshared_tables=true but aarch64 tlb_flush() only checked tlb->freed_tables. This mismatch allowed stale PMD entries to remain in the walk cache...

CVE-2026-63875

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When hugepmdunshare is called to unshare a PMD table, the tlbunsharepmdptdesc function sets tlb-unsharedtables=true but the aarch64 tlbflush only checked tlb-freedtables to...

PT-2026-61192

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the arm64 architecture where the tlb flush function failed to properly invalidate the walk cache when unsharing PMD tables. Specifically, the function only checked...

CVE-2026-23100

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix hugetlbpmdshared Patch series "mm/hugetlb: fixes for PMD table sharing incl. using mmugather", v3. One functional fix, one performance regression fix, and two related comment fixes. I cleaned up my prototype I...

CVE-2026-23100 mm/hugetlb: fix hugetlb_pmd_shared()

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix hugetlbpmdshared Patch series "mm/hugetlb: fixes for PMD table sharing incl. using mmugather", v3. One functional fix, one performance regression fix, and two related comment fixes. I cleaned up my prototype I...