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USN-1236-1: Linux kernel vulnerabilities

20 October 2011

Multiple kernel flaws have been fixed.

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Releases

Packages

Details

It was discovered that the Auerswald usb driver incorrectly handled lengths
of the USB string descriptors. A local attacker with physical access could
insert a specially crafted USB device and gain root privileges.
(CVE-2009-4067)

It was discovered that the Stream Control Transmission Protocol (SCTP)
implementation incorrectly calculated lengths. If the net.sctp.addip_enable
variable was turned on, a remote attacker could send specially crafted
traffic to crash the system. (CVE-2011-1573)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Vasiliy Kulikov discovered that /proc/PID/io did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2495)

Dan Kaminsky discovered that the kernel incorrectly handled random sequence
number generation. An attacker could use this flaw to possibly predict
sequence numbers and inject packets. (CVE-2011-3188)

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.

Learn more about Ubuntu Pro

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-1241-1: linux-image-2.6.31-611-imx51, linux-fsl-imx51
  • USN-1243-1: linux-image-2.6.35-30-generic, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-powerpc-smp, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-versatile, linux, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-server
  • USN-1253-1: linux-image-2.6.32-35-powerpc64-smp, linux-image-2.6.32-35-powerpc, linux-image-2.6.32-35-sparc64-smp, linux-image-2.6.32-35-powerpc-smp, linux-image-2.6.32-35-versatile, linux-image-2.6.32-35-ia64, linux-image-2.6.32-35-server, linux, linux-image-2.6.32-35-virtual, linux-image-2.6.32-35-sparc64, linux-image-2.6.32-35-386, linux-image-2.6.32-35-generic, linux-image-2.6.32-35-preempt, linux-image-2.6.32-35-lpia, linux-image-2.6.32-35-generic-pae
  • USN-1239-1: linux-image-2.6.32-319-ec2, linux-ec2
  • USN-1281-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1285-1: linux-image-2.6.38-13-omap, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-generic, linux, linux-image-2.6.38-13-server, linux-image-2.6.38-13-powerpc-smp, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae
  • USN-1279-1: linux-lts-backport-natty, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-server, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae
  • USN-1244-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1240-1: linux-mvl-dove, linux-image-2.6.32-219-dove
  • USN-1245-1: linux-image-2.6.32-419-dove, linux-mvl-dove
  • USN-1242-1: linux-lts-backport-maverick, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-server
  • USN-1228-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1246-1: linux-image-2.6.38-12-powerpc, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-omap, linux, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-powerpc-smp, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-powerpc64-smp, linux-image-2.6.38-12-server, linux-image-2.6.38-12-versatile
  • USN-1220-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1256-1: linux-lts-backport-natty, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-server
  • USN-1294-1: linux-lts-backport-oneiric, linux-image-3.0.0-13-generic-pae, linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-server
  • USN-1275-1: linux-image-3.0.0-13-powerpc, linux-image-3.0.0-13-powerpc64-smp, linux-image-3.0.0-13-powerpc-smp, linux-image-3.0.0-13-generic-pae, linux-image-3.0.0-13-omap, linux, linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-server
  • USN-1260-1: linux-image-3.0.0-1206-omap4, linux-ti-omap4
  • USN-1141-1: linux-image-2.6.32-32-ia64, linux-image-2.6.32-32-386, linux-image-2.6.32-32-powerpc, linux-image-2.6.32-32-sparc64-smp, linux-image-2.6.32-32-generic-pae, linux-image-2.6.32-316-ec2, linux-image-2.6.32-32-powerpc64-smp, linux-image-2.6.32-32-preempt, linux-image-2.6.32-32-versatile, linux-image-2.6.32-32-virtual, linux-image-2.6.32-32-powerpc-smp, linux, linux-image-2.6.32-32-generic, linux-image-2.6.32-32-server, linux-image-2.6.32-32-sparc64, linux-ec2, linux-image-2.6.32-32-lpia
  • USN-1162-1: linux-mvl-dove, linux-image-2.6.32-217-dove
  • USN-1159-1: linux-mvl-dove, linux-image-2.6.32-417-dove

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Further reading