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.
Published: 2026-03-25
Score: 8.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Local Privilege Escalation
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

Thu, 26 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Cryptodev-linux
Cryptodev-linux cryptodev-linux
Vendors & Products Cryptodev-linux
Cryptodev-linux cryptodev-linux

Wed, 25 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 25 Mar 2026 13:30:00 +0000

Type Values Removed Values Added
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.
Title cryptodev-linux <= 1.14 get_userbuf Use After Free LPE
Weaknesses CWE-416
References
Metrics cvssV4_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'}


Subscriptions

Cryptodev-linux Cryptodev-linux
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-11T23:11:34.322Z

Reserved: 2026-02-27T21:07:55.468Z

Link: CVE-2026-28529

cve-icon Vulnrichment

Updated: 2026-03-25T13:48:12.300Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-25T14:16:33.690

Modified: 2026-03-25T15:41:33.977

Link: CVE-2026-28529

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-26T11:43:14Z

Weaknesses