USN-143-1: Linux amd64 kernel vulnerabilities

27 June 2005

linux-source-2.6.10, linux-source-2.6.8.1 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 5.04
  • Ubuntu 4.10

Software Description

Details

A Denial of Service vulnerability has been discovered in the ptrace() call on the amd64 platform. By calling ptrace() with specially crafted (“non-canonical”) addresses, a local attacker could cause the kernel to crash. This only affects the amd64 platform. (CAN-2005-1762)

ZouNanHai discovered that a local user could hang the kernel by invoking syscall() with specially crafted arguments. This only affects the amd64 platform when running in the 32 bit compatibility mode. (CAN-2005-1765)

Update instructions

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

Ubuntu 5.04
linux-image-2.6.10-5-amd64-generic
linux-image-2.6.10-5-amd64-k8
linux-image-2.6.10-5-amd64-k8-smp
linux-image-2.6.10-5-amd64-xeon
linux-image-2.6.8.1-5-power4
linux-image-2.6.8.1-5-power4-smp
linux-image-2.6.8.1-5-powerpc
linux-image-2.6.8.1-5-powerpc-smp
linux-patch-debian-2.6.8.1
linux-patch-ubuntu-2.6.10
Ubuntu 4.10
linux-image-2.6.10-5-amd64-generic
linux-image-2.6.10-5-amd64-k8
linux-image-2.6.10-5-amd64-k8-smp
linux-image-2.6.10-5-amd64-xeon
linux-image-2.6.8.1-5-power4
linux-image-2.6.8.1-5-power4-smp
linux-image-2.6.8.1-5-powerpc
linux-image-2.6.8.1-5-powerpc-smp
linux-patch-debian-2.6.8.1
linux-patch-ubuntu-2.6.10

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

References