6.9 - USN-1940-1

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-ec2: Linux kernel for EC2

Details:

Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that allows for privilege escalation. A local user could exploit this flaw to run commands as root when using the perf tool. (CVE-2013-1060)

Michael S. Tsirkin discovered a flaw in how the Linux kernel's KVM subsystem allocates memory slots for the guest's address space. A local user could exploit this flaw to gain system privileges or obtain sensitive information from kernel memory. (CVE-2013-1943)

A flaw was discovered in the SCTP (stream control transfer protocol) network protocol's handling of duplicate cookies in the Linux kernel. A remote attacker could exploit this flaw to cause a denial of service (system crash) on another remote user querying the SCTP connection. (CVE-2013-2206)

Hannes Frederic Sowa discovered a flaw in setsockopt UDP_CORK option in the Linux kernel's IPv6 stack. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-4162)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-356-ec2 2.6.32-356.69

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

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.

References:
http://www.ubuntu.com/usn/usn-1940-1
CVE-2013-1060, CVE-2013-1943, CVE-2013-2206, CVE-2013-4162

Package Information:
https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-356.69