USN-1940-1: Linux kernel (EC2) vulnerabilities

Releases

• Ubuntu 10.04

Packages

• 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

• 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

• CVE-2013-1060
• CVE-2013-1943
• CVE-2013-2206
• CVE-2013-4162

Related notices

• USN-1941-1: linux, linux-image-3.2.0-53-virtual, linux-image-3.2.0-53-powerpc64-smp, linux-image-3.2.0-53-generic, linux-image-3.2.0-53-generic-pae, linux-image-3.2.0-53-powerpc-smp, linux-image-3.2.0-53-highbank, linux-image-3.2.0-53-omap
• USN-1943-1: linux-image-3.8.0-30-generic, linux-lts-raring
• USN-1942-1: linux-ti-omap4, linux-image-3.2.0-1437-omap4
• USN-1947-1: linux-image-3.5.0-40-generic, linux-lts-quantal
• USN-1946-1: linux-ti-omap4, linux-image-3.5.0-232-omap4
• USN-1938-1: linux, linux-image-3.8.0-30-generic
• USN-1939-1: linux, linux-image-2.6.32-51-sparc64-smp, linux-image-2.6.32-51-versatile, linux-image-2.6.32-51-powerpc-smp, linux-image-2.6.32-51-preempt, linux-image-2.6.32-51-386, linux-image-2.6.32-51-powerpc, linux-image-2.6.32-51-server, linux-image-2.6.32-51-sparc64, linux-image-2.6.32-51-virtual, linux-image-2.6.32-51-ia64, linux-image-2.6.32-51-powerpc64-smp, linux-image-2.6.32-51-lpia, linux-image-2.6.32-51-generic-pae, linux-image-2.6.32-51-generic
• USN-1944-1: linux, linux-image-3.5.0-40-powerpc64-smp, linux-image-3.5.0-40-generic, linux-image-3.5.0-40-powerpc-smp, linux-image-3.5.0-40-omap, linux-image-3.5.0-40-highbank
• USN-1945-1: linux-ti-omap4, linux-image-3.5.0-232-omap4
• USN-1812-1: linux-lts-quantal, linux-image-3.5.0-28-generic
• USN-1809-1: linux, linux-image-3.2.0-41-powerpc64-smp, linux-image-3.2.0-41-virtual, linux-image-3.2.0-41-generic-pae, linux-image-3.2.0-41-powerpc-smp, linux-image-3.2.0-41-highbank, linux-image-3.2.0-41-generic, linux-image-3.2.0-41-omap
• USN-1813-1: linux-image-3.5.0-28-powerpc-smp, linux, linux-image-3.5.0-28-omap, linux-image-3.5.0-28-generic, linux-image-3.5.0-28-highbank, linux-image-3.5.0-28-powerpc64-smp
• USN-1814-1: linux-ti-omap4, linux-image-3.5.0-223-omap4
• USN-1811-1: linux-image-3.2.0-1430-omap4, linux-ti-omap4