ZDI-26-836: Linux Kernel CIFS File System Use-After-Free Privilege Escalation Vulnerability
Published Oct 29, 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 high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-72315.
Event History
Oct 29, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Can an unprivileged local user exploit this issue without any existing elevated execution capability?
The advisory states that exploitation requires the attacker to first be able to execute high-privileged code on the target. It does not indicate that a standard unprivileged local account alone is sufficient.