acpid: Denial of service

Background

acpid is a daemon for the Advanced Configuration and Power Interface (ACPI).

Description

The acpid daemon allows opening a large number of UNIX sockets without closing them, triggering an infinite loop.

Impact

Remote attackers can cause a Denial of Service (CPU consumption and connectivity loss).

Workaround

There is no known workaround at this time.

Resolution

All acpid users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-power/acpid-1.0.10"