USN-1421-1: Linux kernel (Maverick backport) vulnerabilities

Releases

• Ubuntu 10.04

Packages

• linux-lts-backport-maverick - Linux kernel backport from Maverick

Details

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.
(CVE-2011-4347)

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.
(CVE-2012-1097)

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)

Update instructions

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

Ubuntu 10.04

• 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

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2011-4347
• CVE-2012-0045
• CVE-2012-1097
• CVE-2012-1146

Related notices

• USN-1440-1: linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-server, linux-lts-backport-natty, linux-image-2.6.38-15-generic-pae
• USN-1425-1: linux-image-2.6.32-41-powerpc, linux-image-2.6.32-41-server, linux-image-2.6.32-41-sparc64, linux-image-2.6.32-41-386, linux-image-2.6.32-41-generic, linux-image-2.6.32-41-versatile, linux-image-2.6.32-41-powerpc64-smp, linux-image-2.6.32-41-generic-pae, linux-image-2.6.32-41-ia64, linux-image-2.6.32-41-preempt, linux-image-2.6.32-41-sparc64-smp, linux-image-2.6.32-41-powerpc-smp, linux-image-2.6.32-41-lpia, linux-image-2.6.32-41-virtual, linux
• USN-1433-1: linux-image-3.0.0-19-server, linux-image-3.0.0-19-generic-pae, linux-lts-backport-oneiric, linux-image-3.0.0-19-generic, linux-image-3.0.0-19-virtual
• USN-1422-1: linux-image-2.6.38-14-generic-pae, linux-image-2.6.38-14-server, linux-image-2.6.38-14-powerpc, linux-image-2.6.38-14-generic, linux-image-2.6.38-14-powerpc-smp, linux-image-2.6.38-14-powerpc64-smp, linux-image-2.6.38-14-omap, linux-image-2.6.38-14-versatile, linux-image-2.6.38-14-virtual, linux
• USN-1431-1: linux, linux-image-3.0.0-19-powerpc-smp, linux-image-3.0.0-19-server, linux-image-3.0.0-19-generic-pae, linux-image-3.0.0-19-powerpc64-smp, linux-image-3.0.0-19-virtual, linux-image-3.0.0-19-omap, linux-image-3.0.0-19-generic, linux-image-3.0.0-19-powerpc
• USN-1426-1: linux-ec2, linux-image-2.6.32-345-ec2
• USN-1446-1: linux-ti-omap4, linux-image-3.0.0-1209-omap4
• USN-1458-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4