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USN-3209-1: Linux kernel vulnerabilities

22 February 2017

Several security issues were fixed in the kernel.

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Releases

Packages

Details

It was discovered that the generic SCSI block layer in the Linux kernel did
not properly restrict write operations in certain situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2016-10088)

Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
(CVE-2016-9588)

Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)

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Update instructions

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

Ubuntu 16.10

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

Related notices

  • USN-3208-1: linux-image-4.4.0-64-lowlatency, linux-snapdragon, linux, linux-image-4.4.0-1048-snapdragon, linux-image-4.4.0-64-generic, linux-image-4.4.0-64-powerpc64-smp, linux-image-4.4.0-64-powerpc-smp, linux-image-4.4.0-64-generic-lpae, linux-image-4.4.0-64-powerpc-e500mc, linux-image-4.4.0-64-powerpc64-emb, linux-image-extra-4.4.0-64-generic
  • USN-3208-2: linux-image-4.4.0-64-lowlatency, linux-lts-xenial, linux-image-4.4.0-64-generic, linux-image-4.4.0-64-powerpc64-smp, linux-image-4.4.0-64-powerpc-smp, linux-image-4.4.0-64-generic-lpae, linux-image-4.4.0-64-powerpc-e500mc, linux-image-4.4.0-64-powerpc64-emb, linux-image-extra-4.4.0-64-generic
  • USN-3360-1: linux-image-3.13.0-125-generic, linux, linux-image-3.13.0-125-powerpc-e500mc, linux-image-3.13.0-125-powerpc64-emb, linux-image-3.13.0-125-powerpc-e500, linux-image-3.13.0-125-lowlatency, linux-image-3.13.0-125-generic-lpae, linux-image-3.13.0-125-powerpc-smp, linux-image-3.13.0-125-powerpc64-smp, linux-image-extra-3.13.0-125-generic
  • USN-3360-2: linux-image-3.13.0-125-generic, linux-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-125-generic-lpae, linux-image-generic-lts-trusty
  • USN-3822-2: linux-image-3.13.0-162-generic, linux-image-3.13.0-162-generic-lpae, linux-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-generic-lts-trusty
  • USN-3822-1: linux-image-3.13.0-162-powerpc64-emb, linux-image-3.13.0-162-generic, linux-image-3.13.0-162-generic-lpae, linux-image-extra-3.13.0-162-generic, linux, linux-image-3.13.0-162-powerpc-smp, linux-image-3.13.0-162-lowlatency, linux-image-3.13.0-162-powerpc-e500, linux-image-3.13.0-162-powerpc-e500mc, linux-image-3.13.0-162-powerpc64-smp
  • USN-3207-1: linux-image-3.13.0-110-powerpc-smp, linux-image-extra-3.13.0-110-generic, linux-image-3.13.0-110-generic, linux, linux-image-3.13.0-110-lowlatency, linux-image-3.13.0-110-powerpc-e500mc, linux-image-3.13.0-110-powerpc64-smp, linux-image-3.13.0-110-powerpc-e500, linux-image-3.13.0-110-generic-lpae, linux-image-3.13.0-110-powerpc64-emb
  • USN-3206-1: linux-image-powerpc-smp, linux-image-3.2.0-123-powerpc64-smp, linux-image-generic, linux-image-virtual, linux-image-3.2.0-123-virtual, linux, linux-image-3.2.0-123-highbank, linux-image-generic-pae, linux-image-powerpc64-smp, linux-image-3.2.0-123-powerpc-smp, linux-image-highbank, linux-ti-omap4, linux-image-omap4, linux-image-3.2.0-123-generic, linux-image-omap, linux-image-3.2.0-123-generic-pae, linux-image-3.2.0-123-omap, linux-image-3.2.0-1501-omap4
  • USN-3207-2: linux-image-3.13.0-110-generic, linux-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-110-generic-lpae, linux-image-generic-lts-trusty

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