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  4. CVE 2026 28529 cryptodev linux 114 getuserbuf use after free lpe
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Back to active CVEs
High · CVSS 8.5CVE-2026-28529

cryptodev-linux <= 1.14 get_userbuf Use After Free LPECVE-2026-28529

Answer in brief

CVE-2026-28529 records a High severity (CVSS 8.5) vulnerability in cryptodev-linux <= 1.14 get_userbuf Use After Free LPE. The current sources do not mark it as known exploited. The current feed maps cryptodev-linux/cryptodev-linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 25, 2026Updated Nov 8, 2026Source checked Nov 8, 2026First seen by HOL Aug 18, 2026Material review Nov 8, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.5
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps cryptodev-linux/cryptodev-linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:cryptodev-linux:cryptodev-linux:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
cryptodev-linux/cryptodev-linuxgeneric>=0 <=1.14Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for cryptodev-linux/cryptodev-linux.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Mar 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • GitHub security advisorygist.github.com
  • GitHub security advisorygithub.com
  • Source referencenasm.re
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416
Source
CVE List V5
Source checked
Nov 8, 2026
References
4 linked sources
Open source record