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Ubuntu 13.04 USN-1938-1: Critical Kernel Threats and Fixes

ubuntu
Calendar Grey September 5, 2013
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that

allows for privilege escalation. A local could exploit this flaw to run

commands as root when using the perf tool. (CVE-2013-1060)

A flaw was discovered in the Xen subsystem of the Linux kernel when it

provides a guest OS read-only access to disks that support TRIM or SCSI

UNMAP. A privileged user in the guest OS could exploit this flaw to

destroy data on the disk. (CVE-2013-2140)

A flaw was discovered in the Linux kernel when an IPv6 socket is used to

connect to an IPv4 destination. A unprivileged local user could exploit

this flaw to cause a denial of service (system crash). (CVE-2013-2232)

An information leak was discovered in the IPSec key_socket implementation

in the Linux kernel. An local user could exploit this flaw to examine

potentially sensitive information in kernel memory...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation kernel ubuntu linux update kernel issues

Update Instructions

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

Ubuntu 13.04:
  linux-image-3.8.0-30-generic    3.8.0-30.44

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

https://ubuntu.com/security/notices/USN-1938-1

CVE-2013-1060, CVE-2013-2140, CVE-2013-2232, CVE-2013-2234,

CVE-2013-4162, CVE-2013-4163

Severity
critical
Lowest
Low
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Critical

September 05, 2013

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation kernel ubuntu linux update kernel issues

Package Information

https://launchpad.net/ubuntu/+source/linux/3.8.0-30.44

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