USN-1292-1: Linux kernel (Maverick backport) vulnerabilities

Releases

• Ubuntu 10.04

Packages

• linux-lts-backport-maverick - Linux kernel backport from Maverick

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)

A bug was found in the way headroom check was performed in
udp6_ufo_fragment() function. A remote attacker could use this flaw to
crash the system. (CVE-2011-4326)

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-2.6.35-31-generic-pae - 2.6.35-31.63~lucid1
• linux-image-2.6.35-31-server - 2.6.35-31.63~lucid1
• linux-image-2.6.35-31-virtual - 2.6.35-31.63~lucid1
• linux-image-2.6.35-31-generic - 2.6.35-31.63~lucid1

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

• CVE-2011-4077
• CVE-2011-4081
• CVE-2011-4132
• CVE-2011-4326
• CVE-2011-4330

Related notices

• USN-1302-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1299-1: linux-ec2, linux-image-2.6.32-341-ec2
• USN-1340-1: linux-image-3.0.0-15-generic, linux-image-3.0.0-15-generic-pae, linux-lts-backport-oneiric, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-server
• USN-1301-1: linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-generic, linux-lts-backport-natty
• USN-1336-1: linux-image-3.0.0-15-generic, linux-image-3.0.0-15-generic-pae, linux-image-3.0.0-15-powerpc64-smp, linux, linux-image-3.0.0-15-omap, linux-image-3.0.0-15-powerpc, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-server, linux-image-3.0.0-15-powerpc-smp
• USN-1312-1: linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-powerpc-smp, linux-image-2.6.38-13-server, linux, linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-omap, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-generic
• USN-1303-1: linux-mvl-dove, linux-image-2.6.32-421-dove
• USN-1293-1: linux-image-2.6.35-31-server, linux-image-2.6.35-31-virtual, linux, linux-image-2.6.35-31-versatile, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-omap, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-powerpc-smp, linux-image-2.6.35-31-powerpc64-smp
• USN-1311-1: linux-image-2.6.32-37-generic-pae, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-powerpc-smp, linux, linux-image-2.6.32-37-lpia, linux-image-2.6.32-37-powerpc, linux-image-2.6.32-37-preempt, linux-image-2.6.32-37-server, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-386, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-generic, linux-image-2.6.32-37-powerpc64-smp
• USN-1330-1: linux-ti-omap4, linux-image-3.0.0-1206-omap4
• USN-1300-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
• USN-1304-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
• USN-1291-1: linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-sparc64-smp, linux-image-2.6.24-30-rt, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-386, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-hppa64, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-generic, linux, linux-image-2.6.24-30-server, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-powerpc64-smp
• USN-1322-1: linux-image-3.0.0-14-omap, linux-image-3.0.0-14-generic, linux-image-3.0.0-14-powerpc, linux, linux-image-3.0.0-14-generic-pae, linux-image-3.0.0-14-powerpc-smp, linux-image-3.0.0-14-server, linux-image-3.0.0-14-powerpc64-smp, linux-image-3.0.0-14-virtual
• USN-1287-1: linux-ti-omap4, linux-image-3.0.0-1206-omap4
• USN-1313-1: linux-image-3.0.0-14-generic, linux-image-3.0.0-14-generic-pae, linux-image-3.0.0-14-server, linux-lts-backport-oneiric, linux-image-3.0.0-14-virtual
• USN-1294-1: linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-generic-pae, linux-lts-backport-oneiric, linux-image-3.0.0-13-server
• USN-1256-1: linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-server, linux-lts-backport-natty
• USN-1193-1: linux-image-2.6.38-11-powerpc64-smp, linux-image-2.6.38-11-generic, linux-image-2.6.38-11-powerpc, linux, linux-image-2.6.38-11-generic-pae, linux-image-2.6.38-11-versatile, linux-image-2.6.38-11-server, linux-image-2.6.38-11-powerpc-smp, linux-image-2.6.38-11-virtual, linux-image-2.6.38-11-omap