CVE-2026-28529

EUVD-2026-15408
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 6.81%
Affected Products (NVD)
VendorProductVersion
cryptodev-linuxcryptodev-linux
𝑥
≤ 1.14
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750
https://github.com/cryptodev-linux/cryptodev-linux/pull/104
https://nasm.re/posts/cryptodev-linux-vuln/
https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe