{"schema_version":"1.9.0","id":"CVE-2026-63953","published":"2026-07-19T14:55:45.509Z","modified":"2026-08-12T03:51:43.183987136Z","summary":"mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page\n\nWhen migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due\nto a PMD check failure, the pgtable allocated earlier via\npte_alloc_one() is never freed, causing a memory leak.\n\nAdded free_abort label to release the pgtable in error path.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c"},{"fixed":"24861d04f197bb651e9dfb211978271c15f75a98"},{"fixed":"2c6f81d58741349298f51ff697d988cb42881453"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63953.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63953.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63953.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63953"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63953.json"}}