Ubuntu 26.04 LTS cifs-utils Important Local Code Execution Vulnern 8496-1

ubuntu

July 2, 2026

cifs-utils could be made to run programs as an administrator.

Summary

cifs-utils could be made to run programs as an administrator.

Software Description:

- cifs-utils: Common Internet File System utilities

Details:

It was discovered that cifs-utils incorrectly dropped root privileges

before looking up user information. A local attacker could possibly use

this issue to execute arbitrary code as the root user.

Topics Covered

security advisory arbitrary code execution Ubuntu important local attack cifs-utils

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  cifs-utils                      2:7.4-1ubuntu0.26.04.1

Ubuntu 25.10
  cifs-utils                      2:7.4-1ubuntu0.25.10.1

Ubuntu 24.04 LTS
  cifs-utils                      2:7.0-2ubuntu0.3

Ubuntu 22.04 LTS
  cifs-utils                      2:6.14-1ubuntu0.4

In general, a standard system update will make all the necessary changes.