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USN-2356-1: Linux kernel vulnerabilities

23 September 2014

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Jack Morgenstein reported a flaw in the page handling of the KVM (Kerenl
Virtual Machine) subsystem in the Linux kernel. A guest OS user could
exploit this flaw to cause a denial of service (host OS memory corruption)
or possibly have other unspecified impact on the host OS. (CVE-2014-3601)

Chris Evans reported an flaw in the Linux kernel's handling of iso9660
(compact disk filesystem) images. An attacker who can mount a custom
iso9660 image either via a CD/DVD drive or a loopback mount could cause a
denial of service (system crash or reboot). (CVE-2014-5471)

Chris Evans reported an flaw in the Linux kernel's handling of iso9660
(compact disk filesystem) images. An attacker who can mount a custom
iso9660 image, with a self-referential CL entry, either via a CD/DVD drive
or a loopback mount could cause a denial of service (unkillable mount
process). (CVE-2014-5472)

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

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-2358-1: linux-lts-trusty, linux-image-3.13.0-36-generic-lpae, linux-image-3.13.0-36-generic
  • USN-2359-1: linux-image-3.13.0-36-powerpc64-smp, linux-image-3.13.0-36-generic, linux-image-3.13.0-36-lowlatency, linux, linux-image-extra-3.13.0-36-generic, linux-image-3.13.0-36-powerpc-e500mc, linux-image-3.13.0-36-powerpc-smp, linux-image-3.13.0-36-powerpc64-emb, linux-image-3.13.0-36-powerpc-e500, linux-image-3.13.0-36-generic-lpae
  • USN-2357-1: linux-image-3.2.0-1453-omap4, linux-ti-omap4
  • USN-2355-1: linux-image-2.6.32-370-ec2, linux-ec2
  • USN-2354-1: linux-image-2.6.32-66-generic-pae, linux-image-2.6.32-66-ia64, linux-image-2.6.32-66-server, linux-image-2.6.32-66-powerpc64-smp, linux-image-2.6.32-66-virtual, linux-image-2.6.32-66-powerpc, linux, linux-image-2.6.32-66-powerpc-smp, linux-image-2.6.32-66-lpia, linux-image-2.6.32-66-sparc64-smp, linux-image-2.6.32-66-versatile, linux-image-2.6.32-66-generic, linux-image-2.6.32-66-preempt, linux-image-2.6.32-66-386, linux-image-2.6.32-66-sparc64

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