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USN-1170-1: Linux kernel vulnerabilities

15 July 2011

Multiple kernel flaws have been fixed.

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Releases

Packages

Details

Dan Rosenberg discovered that multiple terminal ioctls did not correctly
initialize structure memory. A local attacker could exploit this to read
portions of kernel stack memory, leading to a loss of privacy.
(CVE-2010-4076, CVE-2010-4077)

It was discovered that Xen did not correctly handle certain block requests.
A local attacker in a Xen guest could cause the Xen host to use all
available CPU resources, leading to a denial of service. (CVE-2010-4247)

It was discovered that the ICMP stack did not correctly handle certain
unreachable messages. If a remote attacker were able to acquire a socket
lock, they could send specially crafted traffic that would crash the
system, leading to a denial of service. (CVE-2010-4526)

Kees Cook reported that /proc/pid/stat did not correctly filter certain
memory locations. A local attacker could determine the memory layout of
processes in an attempt to increase the chances of a successful memory
corruption exploit. (CVE-2011-0726)

Timo Warns discovered that OSF partition parsing routines did not correctly
clear memory. A local attacker with physical access could plug in a
specially crafted block device to read kernel memory, leading to a loss of
privacy. (CVE-2011-1163)

Timo Warns discovered that the GUID partition parsing routines did not
correctly validate certain structures. A local attacker with physical
access could plug in a specially crafted block device to crash the system,
leading to a denial of service. (CVE-2011-1577)

Vasiliy Kulikov discovered that the AGP driver did not check certain ioctl
values. A local attacker with access to the video subsystem could exploit
this to crash the system, leading to a denial of service, or possibly gain
root privileges. (CVE-2011-1745, CVE-2011-2022)

Vasiliy Kulikov discovered that the AGP driver did not check the size of
certain memory allocations. A local attacker with access to the video
subsystem could exploit this to run the system out of memory, leading to a
denial of service. (CVE-2011-1746)

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-1080-1: linux-image-2.6.32-29-ia64, linux-image-2.6.32-29-powerpc-smp, linux-image-2.6.32-29-server, linux-image-2.6.32-29-preempt, linux-image-2.6.32-29-virtual, linux-image-2.6.32-29-powerpc64-smp, linux-image-2.6.32-29-lpia, linux-image-2.6.32-29-sparc64, linux-image-2.6.32-29-generic-pae, linux-image-2.6.32-29-generic, linux-image-2.6.32-29-powerpc, linux-image-2.6.32-29-386, linux, linux-image-2.6.32-29-versatile, linux-image-2.6.32-29-sparc64-smp
  • USN-1080-2: linux-image-2.6.32-313-ec2, linux-ec2
  • USN-1204-1: linux-fsl-imx51, linux-image-2.6.31-610-imx51
  • USN-1093-1: linux-image-2.6.32-216-dove, linux-image-2.6.32-416-dove, linux-mvl-dove
  • USN-1089-1: linux-image-2.6.31-23-generic, linux-ec2, linux-image-2.6.31-23-lpia, linux-image-2.6.31-23-sparc64, linux-image-2.6.31-23-virtual, linux-image-2.6.31-23-powerpc-smp, linux-image-2.6.31-23-powerpc64-smp, linux-image-2.6.31-23-sparc64-smp, linux-image-2.6.31-23-powerpc, linux-image-2.6.31-23-ia64, linux-image-2.6.31-23-generic-pae, linux, linux-image-2.6.31-23-386, linux-image-2.6.31-23-server, linux-image-2.6.31-308-ec2
  • USN-1202-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1203-1: linux-image-2.6.32-218-dove, linux-mvl-dove
  • USN-1183-1: 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-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-1208-1: linux-image-2.6.32-418-dove, linux-mvl-dove
  • USN-1187-1: 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-1216-1: linux-image-2.6.32-318-ec2, linux-ec2
  • USN-1092-1: linux-image-2.6.15-57-powerpc64-smp, linux-image-2.6.15-57-amd64-generic, linux-image-2.6.15-57-hppa64-smp, linux-image-2.6.15-57-itanium, linux-image-2.6.15-57-k7, linux-image-2.6.15-57-hppa32, linux-image-2.6.15-57-686, linux-image-2.6.15-57-amd64-server, linux-image-2.6.15-57-powerpc, linux-image-2.6.15-57-amd64-xeon, linux-image-2.6.15-57-386, linux-image-2.6.15-57-sparc64, linux-image-2.6.15-57-sparc64-smp, linux-image-2.6.15-57-mckinley, linux-image-2.6.15-57-server, linux-image-2.6.15-57-amd64-k8, linux-image-2.6.15-57-server-bigiron, linux-image-2.6.15-57-mckinley-smp, linux-image-2.6.15-57-hppa64, linux-image-2.6.15-57-powerpc-smp, linux-image-2.6.15-57-itanium-smp, linux-image-2.6.15-57-hppa32-smp, linux-source-2.6.15
  • USN-1160-1: 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-1141-1: linux-image-2.6.32-32-generic-pae, linux-image-2.6.32-32-server, linux-ec2, linux-image-2.6.32-32-virtual, linux-image-2.6.32-32-generic, linux-image-2.6.32-32-sparc64-smp, linux-image-2.6.32-32-powerpc-smp, linux-image-2.6.32-32-powerpc64-smp, linux-image-2.6.32-32-powerpc, linux-image-2.6.32-32-386, linux-image-2.6.32-32-lpia, linux, linux-image-2.6.32-32-ia64, linux-image-2.6.32-32-preempt, linux-image-2.6.32-316-ec2, linux-image-2.6.32-32-versatile, linux-image-2.6.32-32-sparc64
  • USN-1162-1: linux-image-2.6.32-217-dove, linux-mvl-dove
  • USN-1159-1: linux-image-2.6.32-417-dove, linux-mvl-dove
  • 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-1161-1: linux-ec2, linux-image-2.6.32-317-ec2
  • 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-1212-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • 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-1164-1: linux-fsl-imx51, linux-image-2.6.31-609-imx51
  • 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

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