USN-1390-1: Linux kernel vulnerabilities

6 March 2012

linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 8.04 LTS

Summary

Several security issues were fixed in the kernel.

Software Description

  • linux - Linux kernel

Details

Dan Rosenberg reported errors in the OSS (Open Sound System) MIDI interface. A local attacker on non-x86 systems might be able to cause a denial of service. (CVE-2011-1476)

Dan Rosenberg reported errors in the kernel’s OSS (Open Sound System) driver for Yamaha FM synthesizer chips. A local user can exploit this to cause memory corruption, causing a denial of service or privilege escalation. (CVE-2011-1477)

Ben Hutchings reported a flaw in the kernel’s handling of corrupt LDM partitions. A local user could exploit this to cause a denial of service or escalate privileges. (CVE-2011-2182)

A flaw was discovered in the Linux kernel’s NFSv4 (Network File System version 4) file system. A local, unprivileged user could use this flaw to cause a denial of service by creating a file in a NFSv4 filesystem. (CVE-2011-4324)

A flaw was found in how the linux kernel handles user-space held futexs. An unprivileged user could exploit this flaw to cause a denial of service or possibly elevate privileges. (CVE-2012-0028)

Update instructions

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

Ubuntu 8.04 LTS
linux-image-2.6.24-31-386 - 2.6.24-31.99
linux-image-2.6.24-31-generic - 2.6.24-31.99
linux-image-2.6.24-31-hppa32 - 2.6.24-31.99
linux-image-2.6.24-31-hppa64 - 2.6.24-31.99
linux-image-2.6.24-31-itanium - 2.6.24-31.99
linux-image-2.6.24-31-lpia - 2.6.24-31.99
linux-image-2.6.24-31-lpiacompat - 2.6.24-31.99
linux-image-2.6.24-31-mckinley - 2.6.24-31.99
linux-image-2.6.24-31-openvz - 2.6.24-31.99
linux-image-2.6.24-31-powerpc - 2.6.24-31.99
linux-image-2.6.24-31-powerpc-smp - 2.6.24-31.99
linux-image-2.6.24-31-powerpc64-smp - 2.6.24-31.99
linux-image-2.6.24-31-rt - 2.6.24-31.99
linux-image-2.6.24-31-server - 2.6.24-31.99
linux-image-2.6.24-31-sparc64 - 2.6.24-31.99
linux-image-2.6.24-31-sparc64-smp - 2.6.24-31.99
linux-image-2.6.24-31-virtual - 2.6.24-31.99
linux-image-2.6.24-31-xen - 2.6.24-31.99

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