{"id":"CVE-2026-28529","aliases":["EUVD-2026-15408","GHSA-vgx9-cpq5-rx9p"],"status":"published","title":"cryptodev-linux \u003c= 1.14 get_userbuf Use After Free LPE","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","severity":{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00181,"percentile":0.07815,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-03-25T13:00:58Z","modified":"2026-11-09T02:47:19Z","products":[{"vendor":"cryptodev-linux","product":"cryptodev-linux"}],"references":[{"url":"https://nasm.re/posts/cryptodev-linux-vuln/","tags":["technical-description","exploit","Third Party Advisory","evidence"]},{"url":"https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750","tags":["exploit","Exploit","evidence"]},{"url":"https://github.com/cryptodev-linux/cryptodev-linux/pull/104","tags":["issue-tracking","patch","Patch","Third Party Advisory","fix"]},{"url":"https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28529","tags":["advisory"]},{"url":"https://nasm.re/posts/cryptodev-linux-vuln"},{"url":"https://github.com/advisories/GHSA-vgx9-cpq5-rx9p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28529.json","tags":["advisory"]},{"url":"https://github.com/cryptodev-linux/cryptodev-linux","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-28529","title":"cryptodev-linux \u003c= 1.14 get_userbuf Use After Free LPE","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","status":"published","published":"2026-03-25T13:00:58.783Z","modified":"2026-11-08T14:01:50.37Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-08T15:43:32.737211Z"}],"euvd":[{"id":"EUVD-2026-15408","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","status":"published","published":"2026-03-25T13:00:58Z","modified":"2026-11-08T14:01:50Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-08T15:13:09.785497Z"}],"ghsa":[{"id":"GHSA-vgx9-cpq5-rx9p","title":"cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf...","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","status":"published","published":"2026-03-25T15:31:29Z","modified":"2026-08-17T18:32:03Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:10:34.652326Z"}],"nvd":[{"id":"CVE-2026-28529","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","status":"published","published":"2026-03-25T14:16:33.69Z","modified":"2026-08-17T18:02:18.683Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:11.077116Z"}],"osv":[{"id":"CVE-2026-28529","title":"cryptodev-linux \u003c= 1.14 get_userbuf Use After Free LPE","description":"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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.","status":"published","published":"2026-03-25T13:00:58.783Z","modified":"2026-11-09T02:47:19.305233166Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-09T03:16:17.543303Z"}]}}