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USN-1445-1: Linux kernel vulnerabilities

18 May 2012

Several security issues were fixed in the kernel.

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Releases

Packages

Details

A flaw was found in the Linux's kernels ext4 file system when mounted with
a journal. A local, unprivileged user could exploit this flaw to cause a
denial of service. (CVE-2011-4086)

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual
cpu setup. An unprivileged local user could exploit this flaw to crash the
system leading to a denial of service. (CVE-2012-1601)

Steve Grubb reported a flaw with Linux fscaps (file system base
capabilities) when used to increase the permissions of a process. For
application on which fscaps are in use a local attacker can disable address
space randomization to make attacking the process with raised privileges
easier. (CVE-2012-2123)

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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.

References

Related notices

  • USN-1453-1: linux-ec2, linux-image-2.6.32-345-ec2
  • USN-1440-1: linux-image-2.6.38-15-virtual, linux-lts-backport-natty, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server, linux-image-2.6.38-15-generic
  • USN-1433-1: linux-image-3.0.0-19-virtual, linux-image-3.0.0-19-generic-pae, linux-image-3.0.0-19-generic, linux-lts-backport-oneiric, linux-image-3.0.0-19-server
  • USN-1446-1: linux-image-3.0.0-1209-omap4, linux-ti-omap4
  • USN-1432-1: linux-image-2.6.38-15-powerpc-smp, linux-image-2.6.38-15-versatile, linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-powerpc, linux-image-2.6.38-15-omap, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server, linux, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-powerpc64-smp
  • USN-1454-1: linux-image-2.6.24-31-sparc64, linux-image-2.6.24-31-openvz, linux-image-2.6.24-31-virtual, linux-image-2.6.24-31-386, linux-image-2.6.24-31-generic, linux-image-2.6.24-31-lpiacompat, linux-image-2.6.24-31-server, linux-image-2.6.24-31-hppa32, linux-image-2.6.24-31-powerpc, linux-image-2.6.24-31-powerpc-smp, linux-image-2.6.24-31-sparc64-smp, linux-image-2.6.24-31-xen, linux-image-2.6.24-31-lpia, linux-image-2.6.24-31-rt, linux-image-2.6.24-31-hppa64, linux-image-2.6.24-31-itanium, linux, linux-image-2.6.24-31-mckinley, linux-image-2.6.24-31-powerpc64-smp
  • USN-1431-1: linux-image-3.0.0-19-generic-pae, linux-image-3.0.0-19-virtual, linux-image-3.0.0-19-generic, linux-image-3.0.0-19-powerpc, linux-image-3.0.0-19-powerpc64-smp, linux-image-3.0.0-19-server, linux-image-3.0.0-19-powerpc-smp, linux, linux-image-3.0.0-19-omap
  • USN-1458-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4
  • USN-1457-1: linux-image-2.6.38-15-powerpc-smp, linux-image-2.6.38-15-versatile, linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-powerpc, linux-image-2.6.38-15-omap, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server, linux, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-powerpc64-smp
  • USN-1452-1: linux-image-3.0.0-20-omap, linux-image-3.0.0-20-generic, linux-image-3.0.0-20-server, linux-image-3.0.0-20-powerpc, linux-image-3.0.0-20-virtual, linux, linux-image-3.0.0-20-powerpc64-smp, linux-image-3.0.0-20-generic-pae, linux-image-3.0.0-20-powerpc-smp
  • USN-1470-1: linux-image-2.6.38-15-virtual, linux-lts-backport-natty, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server, linux-image-2.6.38-15-generic
  • USN-1448-1: linux-image-3.2.0-24-powerpc-smp, linux-image-3.2.0-24-omap, linux-image-3.2.0-24-generic, linux-image-3.2.0-24-virtual, linux-image-3.2.0-24-powerpc64-smp, linux, linux-image-3.2.0-24-generic-pae
  • USN-1459-1: linux-image-3.0.0-1210-omap4, linux-ti-omap4
  • USN-1460-1: linux-image-3.2.0-1413-omap4, linux-ti-omap4
  • USN-1507-1: linux-image-2.6.24-32-itanium, linux-image-2.6.24-32-xen, linux-image-2.6.24-32-hppa64, linux-image-2.6.24-32-openvz, linux-image-2.6.24-32-virtual, linux-image-2.6.24-32-sparc64-smp, linux-image-2.6.24-32-386, linux-image-2.6.24-32-powerpc-smp, linux-image-2.6.24-32-powerpc64-smp, linux-image-2.6.24-32-powerpc, linux-image-2.6.24-32-mckinley, linux-image-2.6.24-32-generic, linux-image-2.6.24-32-lpiacompat, linux-image-2.6.24-32-sparc64, linux-image-2.6.24-32-server, linux-image-2.6.24-32-rt, linux-image-2.6.24-32-lpia, linux-image-2.6.24-32-hppa32, linux
  • USN-1455-1: linux-image-3.0.0-20-generic, linux-image-3.0.0-20-server, linux-lts-backport-oneiric, linux-image-3.0.0-20-virtual, linux-image-3.0.0-20-generic-pae
  • USN-1530-1: linux-image-2.6.38-1209-omap4, linux-ti-omap4

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