Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cryptodev-Linux | Cryptodev-Linux | <= 1.14 |
Related Weaknesses (CWE)
References
- https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750Exploit
- https://github.com/cryptodev-linux/cryptodev-linux/pull/104PatchThird Party Advisory
- https://nasm.re/posts/cryptodev-linux-vuln/Third Party Advisory
- https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-Third Party Advisory
FAQ
What is CVE-2026-28529?
CVE-2026-28529 is a vulnerability with a CVSS score of 7.8 (HIGH). 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....
How severe is CVE-2026-28529?
CVE-2026-28529 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28529?
Check the references section above for vendor advisories and patch information. Affected products include: Cryptodev-Linux Cryptodev-Linux.