CVE-2026-63953

In the Linux kernel, the following vulnerability has been resolved: mm/migratedevice: fix pgtable leak in migratevmainserthugepmdpage When migratevmainserthugepmdpage jumps to unlockabort due to a PMD check failure, the pgtable allocated earlier via pteallocone is never freed, causing a memory...

CVE-2026-64129

In the Linux kernel, the following vulnerability has been resolved: mm/migratedevice: fix spinlock leak in migratevmainserthugepmdpage When checkstableaddressspace fails after the PMD spinlock has been acquired via pmdlock, the code jumps directly to the abort label, bypassing the spinunlock call...

CVE-2026-63953

CVE-2026-63953 concerns a Linux kernel memory-leak after migrate_vma_insert_huge_pmd_page() jumps to unlock_abort on PMD check failure. The pgtable allocated via pte_alloc_one() could remain unreleased in the error path, leading to a leak. The fix adds a free_abort path to release the pgtable whe...