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USN-3291-1: Linux kernel vulnerabilities

17 May 2017

Several security issues were fixed in the kernel.

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Packages

Details

Dmitry Vyukov discovered that the generic SCSI (sg) subsystem in the Linux
kernel contained a stack-based buffer overflow. A local attacker with
access to an sg device could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2017-7187)

It was discovered that a NULL pointer dereference existed in the Direct
Rendering Manager (DRM) driver for VMWare devices in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-7261)

Li Qiang discovered that an integer overflow vulnerability existed in the
Direct Rendering Manager (DRM) driver for VMWare devices in the Linux
kernel. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2017-7294)

It was discovered that an information leak existed in the set_mempolicy and
mbind compat syscalls in the Linux kernel. A local attacker could use this
to expose sensitive information (kernel memory). (CVE-2017-7616)

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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 16.04

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.
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-3291-3: linux-image-4.4.0-78-powerpc-smp, linux-image-4.4.0-78-lowlatency, linux-image-4.4.0-78-generic-lpae, linux-image-extra-4.4.0-78-generic, linux-lts-xenial, linux-image-4.4.0-78-powerpc64-emb, linux-image-4.4.0-78-powerpc-e500mc, linux-image-4.4.0-78-generic, linux-image-4.4.0-78-powerpc64-smp
  • USN-3361-1: linux-hwe, linux-image-4.10.0-27-generic-lpae, linux-image-4.10.0-27-generic, linux-image-4.10.0-27-lowlatency, linux-image-extra-4.10.0-27-generic
  • USN-3293-1: linux-image-4.10.0-21-lowlatency, linux-image-lowlatency, linux-raspi2, linux-image-4.10.0-1005-raspi2, linux-image-generic, linux-image-4.10.0-21-generic-lpae, linux-image-generic-lpae, linux-image-raspi2, linux, linux-image-4.10.0-21-generic
  • USN-3291-2: linux-raspi2, linux-gke, linux-image-4.4.0-1055-raspi2, linux-snapdragon, linux-image-4.4.0-1058-snapdragon, linux-image-4.4.0-1017-aws, linux-image-4.4.0-1013-gke, linux-image-extra-4.4.0-1013-gke, linux-aws
  • USN-3422-2: linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-3.13.0-132-generic-lpae, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-132-generic
  • USN-3422-1: linux-image-extra-3.13.0-132-generic, linux-image-3.13.0-132-generic-lpae, linux-image-3.13.0-132-powerpc-e500mc, linux-image-3.13.0-132-powerpc-e500, linux, linux-image-3.13.0-132-powerpc64-emb, linux-image-3.13.0-132-powerpc64-smp, linux-image-3.13.0-132-generic, linux-image-3.13.0-132-powerpc-smp, linux-image-3.13.0-132-lowlatency
  • USN-3406-1: linux-image-3.13.0-129-lowlatency, linux-image-3.13.0-129-powerpc64-smp, linux-image-3.13.0-129-powerpc64-emb, linux, linux-image-3.13.0-129-powerpc-e500, linux-image-3.13.0-129-generic, linux-image-3.13.0-129-powerpc-smp, linux-image-3.13.0-129-powerpc-e500mc, linux-image-3.13.0-129-generic-lpae, linux-image-extra-3.13.0-129-generic
  • USN-3406-2: linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-129-generic, linux-image-3.13.0-129-generic-lpae
  • USN-3342-2: linux-hwe, linux-image-4.8.0-58-lowlatency, linux-image-4.8.0-58-generic-lpae, linux-image-4.8.0-58-generic, linux-image-extra-4.8.0-58-generic
  • USN-3342-1: linux-image-lowlatency, linux-raspi2, linux-image-4.8.0-58-powerpc-e500mc, linux-image-generic, linux-image-powerpc64-smp, linux-image-4.8.0-58-powerpc-smp, linux-image-4.8.0-58-lowlatency, linux-image-4.8.0-58-generic-lpae, linux-image-generic-lpae, linux-image-powerpc-e500mc, linux-image-4.8.0-1042-raspi2, linux, linux-image-4.8.0-58-generic, linux-image-powerpc-smp, linux-image-raspi2, linux-image-4.8.0-58-powerpc64-emb, linux-image-powerpc64-emb, linux-image-virtual
  • USN-3343-1: linux-image-3.13.0-123-powerpc64-smp, linux-image-3.13.0-123-generic-lpae, linux-image-3.13.0-123-powerpc-e500, linux-image-3.13.0-123-powerpc-e500mc, linux-image-3.13.0-123-powerpc-smp, linux-image-extra-3.13.0-123-generic, linux-image-3.13.0-123-generic, linux, linux-image-3.13.0-123-lowlatency, linux-image-3.13.0-123-powerpc64-emb
  • USN-3343-2: linux-image-generic-lts-trusty, linux-lts-trusty, linux-image-3.13.0-123-generic-lpae, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-123-generic

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