ZDI-26-680: Linux Kernel Crypto Subsystem Use-After-Free Local Privilege Escalation Vulnerability
Published Sep 14, 2026
·Updated
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-31719.
Affected Software
1 affected component
Linux Linux kernel
Event History
Sep 14, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Who is exposed to exploitation?
Affected Linux kernel installations are exposed when an attacker can execute low-privileged code locally on the system. This is a local privilege-escalation issue, not one described as remotely exploitable in the available information.
2
What level of access does an attacker need before exploiting this issue?
The attacker must first be able to execute low-privileged code on the target system. Successful exploitation can then allow escalation of privileges.