Ubuntu Security Notice USN-577-1

12th February, 2008

linux-source-2.6.17/20/22 vulnerability

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

• Ubuntu 7.10
• Ubuntu 7.04
• Ubuntu 6.10

Software description

• linux-source-2.6.17
• linux-source-2.6.20
• linux-source-2.6.22

Details

Wojciech Purczynski discovered that the vmsplice system call did
not properly perform verification of user-memory pointers. A local
attacker could exploit this to overwrite arbitrary kernel memory
and gain root privileges. (CVE-2008-0600)

Update instructions

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

Ubuntu 7.10:

linux-image-2.6.22-14-itanium 2.6.22-14.52

linux-image-2.6.22-14-sparc64 2.6.22-14.52

linux-image-2.6.22-14-lpia 2.6.22-14.52

linux-image-2.6.22-14-hppa32 2.6.22-14.52

linux-image-2.6.22-14-server 2.6.22-14.52

linux-image-2.6.22-14-powerpc-smp 2.6.22-14.52

linux-image-2.6.22-14-386 2.6.22-14.52

linux-image-2.6.22-14-mckinley 2.6.22-14.52

linux-image-2.6.22-14-sparc64-smp 2.6.22-14.52

linux-image-2.6.22-14-xen 2.6.22-14.52

linux-image-2.6.22-14-generic 2.6.22-14.52

linux-image-2.6.22-14-virtual 2.6.22-14.52

linux-image-2.6.22-14-powerpc 2.6.22-14.52

linux-image-2.6.22-14-cell 2.6.22-14.52

linux-image-2.6.22-14-rt 2.6.22-14.52

linux-image-2.6.22-14-lpiacompat 2.6.22-14.52

linux-image-2.6.22-14-ume 2.6.22-14.52

linux-image-2.6.22-14-powerpc64-smp 2.6.22-14.52

linux-image-2.6.22-14-hppa64 2.6.22-14.52

Ubuntu 7.04:

linux-image-2.6.20-16-386 2.6.20-16.35

linux-image-2.6.20-16-powerpc 2.6.20-16.35

linux-image-2.6.20-16-server 2.6.20-16.35

linux-image-2.6.20-16-mckinley 2.6.20-16.35

linux-image-2.6.20-16-sparc64-smp 2.6.20-16.35

linux-image-2.6.20-16-powerpc64-smp 2.6.20-16.35

linux-image-2.6.20-16-hppa32 2.6.20-16.35

linux-image-2.6.20-16-itanium 2.6.20-16.35

linux-image-2.6.20-16-server-bigiron 2.6.20-16.35

linux-image-2.6.20-16-generic 2.6.20-16.35

linux-image-2.6.20-16-sparc64 2.6.20-16.35

linux-image-2.6.20-16-hppa64 2.6.20-16.35

linux-image-2.6.20-16-lowlatency 2.6.20-16.35

linux-image-2.6.20-16-powerpc-smp 2.6.20-16.35

Ubuntu 6.10:

linux-image-2.6.17-12-mckinley 2.6.17.1-12.44

linux-image-2.6.17-12-powerpc64-smp 2.6.17.1-12.44

linux-image-2.6.17-12-server-bigiron 2.6.17.1-12.44

linux-image-2.6.17-12-hppa64 2.6.17.1-12.44

linux-image-2.6.17-12-sparc64-smp 2.6.17.1-12.44

linux-image-2.6.17-12-generic 2.6.17.1-12.44

linux-image-2.6.17-12-powerpc-smp 2.6.17.1-12.44

linux-image-2.6.17-12-itanium 2.6.17.1-12.44

linux-image-2.6.17-12-hppa32 2.6.17.1-12.44

linux-image-2.6.17-12-386 2.6.17.1-12.44

linux-image-2.6.17-12-powerpc 2.6.17.1-12.44

linux-image-2.6.17-12-sparc64 2.6.17.1-12.44

linux-image-2.6.17-12-server 2.6.17.1-12.44

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

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

References

CVE-2008-0600