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USN-1225-1: Linux kernel vulnerabilities

4 October 2011

Multiple kernel flaws have been fixed.

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Releases

Packages

Details

Timo Warns discovered that the EFI GUID partition table was not correctly
parsed. A physically local attacker that could insert mountable devices
could exploit this to crash the system or possibly gain root privileges.
(CVE-2011-1776)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not
correctly validate certain requests. A local attacker could exploit this to
consume CPU resources, leading to a denial of service. (CVE-2011-2213)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled
certain L2CAP requests. If a system was using Bluetooth, a remote attacker
could send specially crafted traffic to crash the system or gain root
privileges. (CVE-2011-2497)

Fernando Gont discovered that the IPv6 stack used predictable fragment
identification numbers. A remote attacker could exploit this to exhaust
network resources, leading to a denial of service. (CVE-2011-2699)

Time Warns discovered that long symlinks were incorrectly handled on Be
filesystems. A local attacker could exploit this with a malformed Be
filesystem and crash the system, leading to a denial of service.
(CVE-2011-2928)

Darren Lavender discovered that the CIFS client incorrectly handled certain
large values. A remote attacker with a malicious server could exploit this
to crash the system or possibly execute arbitrary code as the root user.
(CVE-2011-3191)

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 8.04

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

References

Related notices

  • USN-1219-1: linux-image-2.6.35-30-generic, linux-lts-backport-maverick, linux-image-2.6.35-30-server, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-generic-pae
  • USN-1241-1: linux-fsl-imx51, linux-image-2.6.31-611-imx51
  • USN-1228-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1220-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1227-1: linux-image-2.6.35-30-generic, linux-image-2.6.35-30-server, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-omap, linux, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-powerpc-smp, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-versatile
  • USN-1168-1: linux-image-2.6.32-33-virtual, linux-image-2.6.32-33-ia64, linux-image-2.6.32-33-server, linux-image-2.6.32-33-sparc64, linux-image-2.6.32-33-powerpc-smp, linux-image-2.6.32-33-generic-pae, linux-image-2.6.32-33-powerpc64-smp, linux-image-2.6.32-33-powerpc, linux-image-2.6.32-33-sparc64-smp, linux-image-2.6.32-33-lpia, linux-image-2.6.32-33-generic, linux, linux-image-2.6.32-33-386, linux-image-2.6.32-33-versatile, linux-image-2.6.32-33-preempt
  • USN-1162-1: linux-image-2.6.32-217-dove, linux-mvl-dove
  • USN-1167-1: linux-image-2.6.38-10-generic, linux-image-2.6.38-10-generic-pae, linux-image-2.6.38-10-virtual, linux-image-2.6.38-10-powerpc64-smp, linux-image-2.6.38-10-powerpc, linux-image-2.6.38-10-powerpc-smp, linux, linux-image-2.6.38-10-versatile, linux-image-2.6.38-10-omap, linux-image-2.6.38-10-server
  • 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-1161-1: linux-ec2, linux-image-2.6.32-317-ec2
  • USN-1159-1: linux-image-2.6.32-417-dove, linux-mvl-dove
  • USN-1208-1: linux-image-2.6.32-418-dove, linux-mvl-dove
  • USN-1246-1: linux-image-2.6.38-12-generic, linux-image-2.6.38-12-omap, linux-image-2.6.38-12-powerpc-smp, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-versatile, linux, linux-image-2.6.38-12-server, linux-image-2.6.38-12-powerpc, linux-image-2.6.38-12-powerpc64-smp
  • USN-1203-1: linux-image-2.6.32-218-dove, linux-mvl-dove
  • USN-1218-1: linux-image-2.6.32-34-generic-pae, linux-image-2.6.32-34-powerpc, linux-image-2.6.32-34-powerpc64-smp, linux-image-2.6.32-34-sparc64-smp, linux-image-2.6.32-34-virtual, linux-image-2.6.32-34-versatile, linux-image-2.6.32-34-sparc64, linux-image-2.6.32-34-preempt, linux, linux-image-2.6.32-34-generic, linux-image-2.6.32-34-386, linux-image-2.6.32-34-powerpc-smp, linux-image-2.6.32-34-server, linux-image-2.6.32-34-lpia, linux-image-2.6.32-34-ia64
  • USN-1216-1: linux-image-2.6.32-318-ec2, linux-ec2
  • USN-1253-1: linux-image-2.6.32-35-server, linux-image-2.6.32-35-preempt, linux-image-2.6.32-35-sparc64-smp, linux-image-2.6.32-35-versatile, linux-image-2.6.32-35-virtual, linux-image-2.6.32-35-generic, linux-image-2.6.32-35-lpia, linux-image-2.6.32-35-powerpc64-smp, linux, linux-image-2.6.32-35-386, linux-image-2.6.32-35-generic-pae, linux-image-2.6.32-35-powerpc, linux-image-2.6.32-35-powerpc-smp, linux-image-2.6.32-35-sparc64, linux-image-2.6.32-35-ia64
  • USN-1239-1: linux-ec2, linux-image-2.6.32-319-ec2
  • USN-1240-1: linux-image-2.6.32-219-dove, linux-mvl-dove
  • USN-1245-1: linux-image-2.6.32-419-dove, linux-mvl-dove
  • USN-1202-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1211-1: 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-1204-1: linux-fsl-imx51, linux-image-2.6.31-610-imx51
  • USN-1212-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4

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Further reading