PatchSiren cyber security CVE debrief
CVE-2026-28529 cryptodev-linux CVE debrief
CVE-2026-28529 is a local privilege escalation vulnerability in cryptodev-linux version 1.14 and prior. The vulnerability is caused by a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver. This flaw allows local users to trigger use-after-free conditions, potentially leading to privilege escalation. System administrators and users of cryptodev-linux version 1.14 and prior should be aware of this vulnerability and take necessary precautions. The CVE record was published on 2026-03-25T14:16:33.690Z and was last modified on 2026-07-14T19:16:54.580Z.
- Vendor
- cryptodev-linux
- Product
- Unknown
- CVSS
- HIGH 8.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-03-25
- Original CVE updated
- 2026-07-14
- Advisory published
- 2026-03-25
- Advisory updated
- 2026-07-14
Who should care
System administrators and users of cryptodev-linux version 1.14 and prior should be aware of this vulnerability. This vulnerability can be exploited by local attackers to gain elevated privileges.
Technical summary
The vulnerability is located in the get_userbuf function of the /dev/crypto device driver in cryptodev-linux version 1.14 and prior. A local attacker can exploit this vulnerability by repeatedly decrementing reference counts of controlled pages, leading to use-after-free conditions and potentially allowing for local privilege escalation. The affected product deployments should be reviewed, and owners should be assigned for follow-up. Official advisories or CVE records should be consulted to validate affected scope, severity, and vendor guidance.
Defensive priority
High
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the vulnerability
- Restrict access to the /dev/crypto interface to authorized users only
- Monitor system logs for suspicious activity related to the /dev/crypto interface
- Consider implementing additional security controls, such as SELinux or AppArmor, to restrict access to sensitive resources
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The CVE record was published on 2026-03-25T14:16:33.690Z and was last modified on 2026-07-14T19:16:54.580Z. The NVD entry is currently Awaiting Analysis. Multiple sources, including Vulncheck and GitHub, provide additional information about the vulnerability. However, details are limited, and defenders should verify the affected scope and vendor guidance with caution. The vulnerability affects cryptodev-linux version 1.14 and prior, but specific deployment details and potential impact are not provided.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-03-25T14:16:33.690Z and has not been modified since then. The NVD entry is currently Awaiting Analysis.