Ubuntu Security Notice USN-1421-1
12th April, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Several security issues were fixed in the kernel.
- linux-lts-backport-maverick - Linux kernel backport from Maverick
Sasha Levin discovered a flaw in the permission checking for device
assignments requested via the kvm ioctl in the Linux kernel. A local user
could use this flaw to crash the system causing a denial of service.
Stephan Bärwolf discovered a flaw in the KVM (kernel-based virtual
machine) subsystem of the Linux kernel. A local unprivileged user can crash
use this flaw to crash VMs causing a deny of service. (CVE-2012-0045)
H. Peter Anvin reported a flaw in the Linux kernel that could crash the
system. A local user could exploit this flaw to crash the system.
A flaw was discovered in the Linux kernel's cgroups subset. A local
attacker could use this flaw to crash the system. (CVE-2012-1146)
The problem can be corrected by updating your system to the following package version:
- Ubuntu 10.04 LTS:
- linux-image-2.6.35-32-virtual 2.6.35-32.68~lucid1
- linux-image-2.6.35-32-server 2.6.35-32.68~lucid1
- linux-image-2.6.35-32-generic-pae 2.6.35-32.68~lucid1
- linux-image-2.6.35-32-generic 2.6.35-32.68~lucid1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.