{"id":"CVE-2026-28529","title":"cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions","summary":"cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/cr…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"cryptodev-linux","product":"cryptodev-linux","affected":["cryptodev-linux <= 1.14"],"published":"2026-03-25","updated":"2026-08-17","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-28529","references":[{"url":"https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750","label":"disclosure@vulncheck.com"},{"url":"https://github.com/cryptodev-linux/cryptodev-linux/pull/104","label":"disclosure@vulncheck.com"},{"url":"https://nasm.re/posts/cryptodev-linux-vuln/","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00174,"epssPercentile":0.0722,"ingestedAt":"2026-08-17T18:59:02.829Z","slug":"CVE-2026-28529","body":"## Overview\n\ncryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.\n\n## Affected\n\n- `cryptodev-linux <= 1.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}