{"id":"CVE-2026-80582","summary":"drm/shmem_helper: Check VMA boundaries for PMD mappings","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem_helper: Check VMA boundaries for PMD mappings\n\nIn the -\u003ehuge_fault handler do not install a PMD huge page\nmapping if the huge page exceeds the boundaries of the VMA.\n\nAll other -\u003ehuge_fault handlers have similar checks and the\nresulting mapping will trigger a VM_BUG_ON_VMA() if it ever\nreaches copy_pmd_range().","modified":"2026-08-28T03:46:21.741002405Z","published":"2026-08-26T14:37:39.113Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80582.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12803e89a1e593fd1e784dfe7453f5e392ccaff2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/617bbd08714857c1613d7c550d43a9092ec0fb97"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80582.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80582"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fc3bbf34e643faa8678aabdc3810c60109f3435a"},{"fixed":"12803e89a1e593fd1e784dfe7453f5e392ccaff2"},{"fixed":"617bbd08714857c1613d7c550d43a9092ec0fb97"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80582.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.1.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80582.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}