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USN-1241-1: Linux kernel (i.MX51) vulnerabilities

25 October 2011

Several security issues were fixed in the kernel.

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Details

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)

Ryan Sweat discovered that the kernel incorrectly handled certain VLAN
packets. On some systems, a remote attacker could send specially crafted
traffic to crash the system, leading to a denial of service.
(CVE-2011-1576)

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)

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)

Robert Swiecki discovered that mapping extensions were incorrectly handled.
A local attacker could exploit this to crash the system, leading to a
denial of service. (CVE-2011-2496)

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)

It was discovered that the wireless stack incorrectly verified SSID
lengths. A local attacker could exploit this to cause a denial of service
or gain root privileges. (CVE-2011-2517)

Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were being
incorrectly handled. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2011-2525)

It was discovered that the EXT4 filesystem contained multiple off-by-one
flaws. A local attacker could exploit this to crash the system, leading to
a denial of service. (CVE-2011-2695)

Herbert Xu discovered that certain fields were incorrectly handled when
Generic Receive Offload (CVE-2011-2723)

Christian Ohm discovered that the perf command looks for configuration
files in the current directory. If a privileged user were tricked into
running perf in a directory containing a malicious configuration file, an
attacker could run arbitrary commands and possibly gain privileges.
(CVE-2011-2905)

Vasiliy Kulikov discovered that the Comedi driver did not correctly clear
memory. A local attacker could exploit this to read kernel stack memory,
leading to a loss of privacy. (CVE-2011-2909)

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)

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)

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)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that had
no prefixpaths. A local attacker with access to a CIFS partition could
exploit this to crash the system, leading to a denial of service.
(CVE-2011-3363)

Gideon Naim discovered a flaw in the Linux kernel's handling VLAN 0 frames.
An attacker on the local network could exploit this flaw to cause a denial
of service. (CVE-2011-3593)

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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 10.04

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

Related notices

  • USN-1141-1: linux-image-2.6.32-32-generic-pae, linux-image-2.6.32-32-lpia, linux-image-2.6.32-32-preempt, linux-image-2.6.32-32-sparc64-smp, linux-image-2.6.32-32-powerpc64-smp, linux-ec2, linux-image-2.6.32-32-server, linux-image-2.6.32-32-virtual, linux-image-2.6.32-32-386, linux-image-2.6.32-32-powerpc, linux, linux-image-2.6.32-32-powerpc-smp, linux-image-2.6.32-316-ec2, linux-image-2.6.32-32-ia64, linux-image-2.6.32-32-generic, linux-image-2.6.32-32-sparc64, linux-image-2.6.32-32-versatile
  • USN-1236-1: linux-image-2.6.24-29-generic, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-server, linux-image-2.6.24-29-386, linux-image-2.6.24-29-hppa32, linux, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-lpiacompat
  • USN-1162-1: linux-mvl-dove, linux-image-2.6.32-217-dove
  • USN-1256-1: linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-server, linux-lts-backport-natty
  • USN-1159-1: linux-image-2.6.32-417-dove, linux-mvl-dove
  • USN-1219-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-virtual, linux-lts-backport-maverick, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-generic-pae
  • USN-1253-1: linux-image-2.6.32-35-preempt, linux-image-2.6.32-35-generic, linux-image-2.6.32-35-ia64, linux-image-2.6.32-35-virtual, linux-image-2.6.32-35-lpia, linux-image-2.6.32-35-server, linux-image-2.6.32-35-386, linux-image-2.6.32-35-powerpc-smp, linux-image-2.6.32-35-sparc64-smp, linux, linux-image-2.6.32-35-powerpc, linux-image-2.6.32-35-powerpc64-smp, linux-image-2.6.32-35-versatile, linux-image-2.6.32-35-sparc64, linux-image-2.6.32-35-generic-pae
  • USN-1239-1: linux-ec2, linux-image-2.6.32-319-ec2
  • USN-1220-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1227-1: linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-server, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-generic, linux, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-powerpc-smp
  • 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-1228-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1168-1: linux-image-2.6.32-33-sparc64-smp, linux-image-2.6.32-33-versatile, linux-image-2.6.32-33-virtual, linux-image-2.6.32-33-generic-pae, linux-image-2.6.32-33-ia64, linux-image-2.6.32-33-preempt, linux-image-2.6.32-33-generic, linux-image-2.6.32-33-server, linux-image-2.6.32-33-lpia, linux-image-2.6.32-33-powerpc, linux-image-2.6.32-33-powerpc64-smp, linux-image-2.6.32-33-sparc64, linux, linux-image-2.6.32-33-powerpc-smp, linux-image-2.6.32-33-386
  • USN-1167-1: 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-generic, linux-image-2.6.38-10-powerpc-smp, linux-image-2.6.38-10-server, linux-image-2.6.38-10-versatile, linux, linux-image-2.6.38-10-powerpc, linux-image-2.6.38-10-omap
  • USN-1225-1: linux-image-2.6.24-29-generic, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-powerpc-smp, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-server, linux-image-2.6.24-29-386, linux-image-2.6.24-29-hppa32, linux, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-lpiacompat
  • USN-1161-1: linux-ec2, linux-image-2.6.32-317-ec2
  • USN-1208-1: linux-mvl-dove, linux-image-2.6.32-418-dove
  • USN-1246-1: linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-generic, linux-image-2.6.38-12-versatile, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-powerpc-smp, linux-image-2.6.38-12-server, linux-image-2.6.38-12-powerpc, linux-image-2.6.38-12-omap, linux, linux-image-2.6.38-12-powerpc64-smp
  • USN-1203-1: linux-mvl-dove, linux-image-2.6.32-218-dove
  • USN-1218-1: linux-image-2.6.32-34-powerpc, linux-image-2.6.32-34-ia64, linux-image-2.6.32-34-powerpc-smp, linux-image-2.6.32-34-lpia, linux-image-2.6.32-34-preempt, linux-image-2.6.32-34-server, linux-image-2.6.32-34-386, linux-image-2.6.32-34-sparc64, linux-image-2.6.32-34-versatile, linux, linux-image-2.6.32-34-sparc64-smp, linux-image-2.6.32-34-generic-pae, linux-image-2.6.32-34-powerpc64-smp, linux-image-2.6.32-34-generic, linux-image-2.6.32-34-virtual
  • USN-1216-1: linux-ec2, linux-image-2.6.32-318-ec2
  • 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-image-3.0.0-13-server, linux-lts-backport-oneiric
  • USN-1243-1: linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-server, linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-generic, linux, linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-powerpc-smp
  • USN-1281-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1285-1: linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-server, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc-smp, linux, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-omap, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-powerpc
  • USN-1279-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-lts-backport-natty, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-virtual
  • USN-1275-1: linux-image-3.0.0-13-powerpc, linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-generic-pae, linux-image-3.0.0-13-omap, linux, linux-image-3.0.0-13-powerpc-smp, linux-image-3.0.0-13-server, linux-image-3.0.0-13-powerpc64-smp
  • USN-1244-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1260-1: linux-ti-omap4, linux-image-3.0.0-1206-omap4
  • USN-1242-1: linux-image-2.6.35-30-server, linux-image-2.6.35-30-virtual, linux-lts-backport-maverick, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-generic-pae
  • USN-1269-1: linux-image-2.6.32-340-ec2, linux-ec2
  • USN-1272-1: linux-image-2.6.35-31-omap, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-versatile, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-powerpc-smp, linux, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-powerpc64-smp, linux-image-2.6.35-31-server
  • USN-1286-1: linux-image-2.6.32-36-sparc64-smp, linux-image-2.6.32-36-versatile, linux-image-2.6.32-36-virtual, linux-image-2.6.32-36-server, linux-image-2.6.32-36-generic-pae, linux-image-2.6.32-36-ia64, linux, linux-image-2.6.32-36-powerpc, linux-image-2.6.32-36-386, linux-image-2.6.32-36-generic, linux-image-2.6.32-36-powerpc-smp, linux-image-2.6.32-36-powerpc64-smp, linux-image-2.6.32-36-preempt, linux-image-2.6.32-36-lpia, linux-image-2.6.32-36-sparc64
  • USN-1280-1: linux-image-2.6.35-903-omap4, linux-ti-omap4
  • USN-1268-1: linux-image-2.6.24-30-rt, linux-image-2.6.24-30-386, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-generic, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-virtual, linux, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-sparc64-smp, linux-image-2.6.24-30-powerpc64-smp, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-hppa64, linux-image-2.6.24-30-server, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-itanium
  • USN-1274-1: linux-mvl-dove, linux-image-2.6.32-420-dove
  • USN-1278-1: linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-generic, linux-lts-backport-maverick, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-server

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