cryptodev-linux <= 1.14 get_userbuf Use After Free LPE
Priority HIGH 72CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
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/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| cryptodev-linux | cryptodev-linux | up to 1.14 | — | No fix listed | CNA |
- cryptodev-linux Vendorcryptodev-linux Affected up to 1.14 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cryptodev-linux:cryptodev-linux:*:*:*:*:*:*:*:* | up to 1.14 | Vulnerable | cryptodev-linux |
- cpe:2.3:a:cryptodev-linux:cryptodev-linux:*:*:*:*:*:*:*:* Versions up to 1.14 Vulnerable ·cryptodev-linux
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28529
- 2026-10-03 Alias added: GHSA-vgx9-cpq5-rx9p
References
Sources
- CVE-2026-28529 · CVE Program
- CVE-2026-28529 · NVD
- FIRST EPSS
- GHSA-vgx9-cpq5-rx9p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences