=========================================================================Ubuntu Security Notice USN-1421-1
April 12, 2012
linux-lts-backport-maverick vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- 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 LTS:
linux-image-2.6.35-32-generic 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-server 2.6.35-32.68~lucid1
linux-image-2.6.35-32-virtual 2.6.35-32.68~lucid1
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-1421-1
CVE-2011-4347, CVE-2012-0045, CVE-2012-1097, CVE-2012-1146
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-maverick/2.6.35-32.68~lucid1