USN-1301-1: Linux kernel (Natty backport) vulnerabilities

Releases

• Ubuntu 10.04

Packages

• linux-lts-backport-natty - Linux kernel backport from Natty

Details

A bug was discovered in the XFS filesystem's handling of pathnames. A local
attacker could exploit this to crash the system, leading to a denial of
service, or gain root privileges. (CVE-2011-4077)

Nick Bowler discovered the kernel GHASH message digest algorithm
incorrectly handled error conditions. A local attacker could exploit this
to cause a kernel oops. (CVE-2011-4081)

A flaw was found in the Journaling Block Device (JBD). A local attacker
able to mount ext3 or ext4 file systems could exploit this to crash the
system, leading to a denial of service. (CVE-2011-4132)

Clement Lecigne discovered a bug in the HFS file system bounds checking.
When a malformed HFS file system is mounted a local user could crash the
system or gain root privileges. (CVE-2011-4330)

Update instructions

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

Ubuntu 10.04

• linux-image-2.6.38-13-virtual - 2.6.38-13.53~lucid1
• linux-image-2.6.38-13-server - 2.6.38-13.53~lucid1
• linux-image-2.6.38-13-generic-pae - 2.6.38-13.53~lucid1
• linux-image-2.6.38-13-generic - 2.6.38-13.53~lucid1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2011-4077
• CVE-2011-4081
• CVE-2011-4132
• CVE-2011-4330

Related notices

• USN-1292-1
• USN-1302-1
• USN-1299-1
• USN-1340-1
• USN-1336-1
• USN-1312-1
• USN-1303-1
• USN-1293-1
• USN-1311-1
• USN-1330-1
• USN-1300-1
• USN-1304-1
• USN-1291-1
• USN-1322-1
• USN-1287-1
• USN-1313-1