sysstat: Arbitrary code execution

Background

sysstat is a package containing a number of performance monitoring utilities for Linux, including sar, mpstat, iostat and sa tools.

Description

A double-free in sysstat’s check_file_actlst() function was discovered.

Impact

A local attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All sysstat users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-admin/sysstat-12.2.1"