{"id":"CVE-2026-93284","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/pagemap: dma-unmap pages before handling migration errors\n\ndrm_pagemap_migrate_unmap_pages() relies on the pages array to determine\nwhich pages require DMA unmappin…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/pagemap: dma-unmap pages before handling migration errors\n\ndrm_pagemap_migrate_unmap_pages() relies on the pages array to determine\nwhich pages require DMA unmappin…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d < e4331c6644db85bc6ceb470bd84bcf371b6dbfa6","Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d < 415f5a755cec5164b149037bf294e270b78d36c6","Linux >= f86ad0ed620cb3c91ec7d5468e93ac68d727539d < 9e6372ec2a3990662ae0a67f56ac0aee19848d5b","Linux 6.17"],"published":"2026-09-24","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:17:46.897","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93284","references":[{"url":"https://git.kernel.org/stable/c/415f5a755cec5164b149037bf294e270b78d36c6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e6372ec2a3990662ae0a67f56ac0aee19848d5b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e4331c6644db85bc6ceb470bd84bcf371b6dbfa6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93284.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93284"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540525"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93284"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93284"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93284.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00127,"epssPercentile":0.02376,"ingestedAt":"2026-09-24T16:47:15.906Z","cwe":["CWE-459"],"scores":{"nvd":8.8,"vendor":5.5,"cna":8.8},"slug":"CVE-2026-93284","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/pagemap: dma-unmap pages before handling migration errors\n\ndrm_pagemap_migrate_unmap_pages() relies on the pages array to determine\nwhich pages require DMA unmapping. However,\ndrm_pagemap_migration_unlock_put_pages() clears the array as part of its\ncleanup, leaving drm_pagemap_migrate_unmap_pages() with no valid page\ninformation if it is called afterward.\n\nCall drm_pagemap_migrate_unmap_pages() before\ndrm_pagemap_migration_unlock_put_pages() so the pages array remains\nvalid during DMA unmapping.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93284.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210533,"id":"CVE-2026-93284","ts":1790316054620,"field":"cvss","old":null,"new":"8.8"},{"seq":210532,"id":"CVE-2026-93284","ts":1790316054620,"field":"severity","old":"none","new":"high"}]}