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1.3. acpid
1.3.1. RHSA-2009:0474: Moderate security update
Important
This update has already been released (prior to the GA of this release) as the security errata RHSA-2009:0474
This update has been rated as having moderate security impact by the Red Hat Security Response Team.
acpid is a daemon that dispatches ACPI (Advanced Configuration and Power Interface) events to user-space programs.
Anthony de Almeida Lopes of Outpost24 AB reported a denial of service flaw in the acpid daemon's error handling. If an attacker could exhaust the sockets open to acpid, the daemon would enter an infinite loop, consuming most CPU resources and preventing acpid from communicating with legitimate processes. (CVE-2009-0798)
Users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.
1.3.2. RHBA-2009:1403: bug fix update
An updated acpid package that fixes a bug is now available.
acpid is a daemon that dispatches ACPI (Advanced Configuration and Power Interface) events to user-space programs.
In some pre-release versions of Red Hat Enterprise Linux 5.4, the Hardware Abstraction Layer (HAL) daemon was initialized before the ACPI daemon. Consequently, this resulted in the HAL daemon preventing the ACPI daemon from accessing /proc/acpi/event. With this update, the acpid package has been updated so the ACPI daemon now starts before the HAL daemon, which resolves this issue. (BZ#503177)
Users should upgrade to this updated package, which resolves these issues.
