USN-1876-1: Linux kernel vulnerabilities

14 June 2013

linux 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 - Linux kernel

Details

Andrew Honig reported a flaw in the way KVM (Kernel-based Virtual Machine) emulated the IOAPIC. A privileged guest user could exploit this flaw to read host memory or cause a denial of service (crash the host). (CVE-2013-1798)

An information leak was discovered in the Linux kernel’s rcvmsg path for ATM (Asynchronous Transfer Mode). A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3222)

An information leak was discovered in the Linux kernel’s recvmsg path for ax25 address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3223)

An information leak was discovered in the Linux kernel’s recvmsg path for the bluetooth address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3224)

An information leak was discovered in the Linux kernel’s bluetooth rfcomm protocol support. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3225)

An information leak was discovered in the Linux kernel’s IRDA (infrared) support subsystem. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3228)

An information leak was discovered in the Linux kernel’s s390 - z/VM support. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3229)

An information leak was discovered in the Linux kernel’s llc (Logical Link Layer 2) support. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3231)

An information leak was discovered in the Linux kernel’s receive message handling for the netrom address family. A local user could exploit this flaw to obtain sensitive information from the kernel’s stack memory. (CVE-2013-3232)

An information leak was discovered in the Linux kernel’s Rose X.25 protocol layer. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3234)

An information leak was discovered in the Linux kernel’s TIPC (Transparent Inter Process Communication) protocol implementation. A local user could exploit this flaw to examine potentially sensitive information from the kernel’s stack memory. (CVE-2013-3235)

Update instructions

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

Ubuntu 10.04 LTS
linux-image-2.6.32-48-386 - 2.6.32-48.110
linux-image-2.6.32-48-generic - 2.6.32-48.110
linux-image-2.6.32-48-generic-pae - 2.6.32-48.110
linux-image-2.6.32-48-ia64 - 2.6.32-48.110
linux-image-2.6.32-48-lpia - 2.6.32-48.110
linux-image-2.6.32-48-powerpc - 2.6.32-48.110
linux-image-2.6.32-48-powerpc-smp - 2.6.32-48.110
linux-image-2.6.32-48-powerpc64-smp - 2.6.32-48.110
linux-image-2.6.32-48-preempt - 2.6.32-48.110
linux-image-2.6.32-48-server - 2.6.32-48.110
linux-image-2.6.32-48-sparc64 - 2.6.32-48.110
linux-image-2.6.32-48-sparc64-smp - 2.6.32-48.110
linux-image-2.6.32-48-versatile - 2.6.32-48.110
linux-image-2.6.32-48-virtual - 2.6.32-48.110

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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