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USN-1293-1: Linux kernel vulnerabilities

8 December 2011

Several security issues were fixed in the kernel.

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Releases

Packages

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 10.10

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

References

Related notices

  • USN-1292-1: linux-lts-backport-maverick, linux-image-2.6.35-31-server, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-virtual
  • USN-1294-1: linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-lts-backport-oneiric, linux-image-3.0.0-13-generic-pae, linux-image-3.0.0-13-server
  • USN-1302-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1299-1: linux-image-2.6.32-341-ec2, linux-ec2
  • USN-1303-1: linux-mvl-dove, linux-image-2.6.32-421-dove
  • USN-1311-1: linux-image-2.6.32-37-lpia, linux-image-2.6.32-37-386, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-generic, linux-image-2.6.32-37-powerpc, linux-image-2.6.32-37-powerpc-smp, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-server, linux-image-2.6.32-37-generic-pae, linux-image-2.6.32-37-powerpc64-smp, linux, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-preempt
  • USN-1304-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1256-1: linux-image-2.6.38-12-generic, linux-lts-backport-natty, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-server, linux-image-2.6.38-12-virtual
  • USN-1193-1: linux-image-2.6.38-11-generic-pae, linux-image-2.6.38-11-versatile, linux-image-2.6.38-11-generic, linux-image-2.6.38-11-server, linux-image-2.6.38-11-powerpc-smp, linux-image-2.6.38-11-powerpc64-smp, linux-image-2.6.38-11-powerpc, linux, linux-image-2.6.38-11-virtual, linux-image-2.6.38-11-omap
  • USN-1340-1: linux-lts-backport-oneiric, linux-image-3.0.0-15-server, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-generic-pae, linux-image-3.0.0-15-generic
  • USN-1301-1: linux-image-2.6.38-13-server, linux-lts-backport-natty, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic
  • USN-1336-1: linux-image-3.0.0-15-powerpc-smp, linux-image-3.0.0-15-powerpc64-smp, linux-image-3.0.0-15-omap, linux-image-3.0.0-15-server, linux, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-generic-pae, linux-image-3.0.0-15-generic, linux-image-3.0.0-15-powerpc
  • USN-1312-1: linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-server, linux-image-2.6.38-13-omap, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc-smp, linux, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-versatile
  • USN-1330-1: linux-ti-omap4, linux-image-3.0.0-1206-omap4
  • USN-1300-1: linux-fsl-imx51, linux-image-2.6.31-612-imx51
  • USN-1291-1: linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-powerpc64-smp, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-generic, linux-image-2.6.24-30-rt, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-386, linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-server, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-sparc64-smp, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-powerpc, linux, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-hppa64
  • USN-1322-1: linux-image-3.0.0-14-generic, linux-image-3.0.0-14-powerpc-smp, linux-image-3.0.0-14-generic-pae, linux-image-3.0.0-14-virtual, linux-image-3.0.0-14-powerpc64-smp, linux-image-3.0.0-14-omap, linux, linux-image-3.0.0-14-server, linux-image-3.0.0-14-powerpc
  • 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-virtual, linux-image-3.0.0-14-generic-pae, linux-lts-backport-oneiric, linux-image-3.0.0-14-server

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Further reading