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USN-3021-1: Linux kernel vulnerabilities

27 June 2016

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Andrey Konovalov discovered that the CDC Network Control Model USB driver
in the Linux kernel did not cancel work events queued if a later error
occurred, resulting in a use-after-free. An attacker with physical access
could use this to cause a denial of service (system crash). (CVE-2016-3951)

Kangjie Lu discovered an information leak in the core USB implementation in
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4482)

Jann Horn discovered that the InfiniBand interfaces within the Linux kernel
could be coerced into overwriting kernel memory. A local unprivileged
attacker could use this to possibly gain administrative privileges on
systems where InifiniBand related kernel modules are loaded.
(CVE-2016-4565)

Kangjie Lu discovered an information leak in the timer handling
implementation in the Advanced Linux Sound Architecture (ALSA) subsystem of
the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4569, CVE-2016-4578)

Kangjie Lu discovered an information leak in the X.25 Call Request handling
in the Linux kernel. A local attacker could use this to obtain potentially
sensitive information from kernel memory. (CVE-2016-4580)

Baozeng Ding discovered a use-after-free issue in the generic PPP layer in
the Linux kernel. A local attacker could use this to cause a denial of
service (system crash). (CVE-2016-4805)

It was discovered that an information leak exists in the Rock Ridge
implementation in the Linux kernel. A local attacker who is able to mount a
malicious iso9660 file system image could exploit this flaw to obtain
potentially sensitive information from kernel memory. (CVE-2016-4913)

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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 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.
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-3003-1: linux-image-4.2.0-38-lowlatency, linux-image-4.2.0-38-powerpc64-smp, linux-image-4.2.0-38-powerpc64-emb, linux-image-4.2.0-38-powerpc-e500mc, linux-image-4.2.0-38-powerpc-smp, linux-image-4.2.0-38-generic-lpae, linux-image-4.2.0-38-generic, linux
  • USN-3000-1: linux-image-3.16.0-73-lowlatency, linux-image-3.16.0-73-generic-lpae, linux-image-extra-3.16.0-73-generic, linux-lts-utopic, linux-image-3.16.0-73-powerpc-e500mc, linux-image-3.16.0-73-generic, linux-image-3.16.0-73-powerpc64-emb, linux-image-3.16.0-73-powerpc64-smp, linux-image-3.16.0-73-powerpc-smp
  • USN-3001-1: linux-image-3.19.0-61-powerpc64-smp, linux-image-extra-3.19.0-61-generic, linux-image-3.19.0-61-powerpc-e500mc, linux-image-3.19.0-61-powerpc64-emb, linux-image-3.19.0-61-lowlatency, linux-image-3.19.0-61-generic-lpae, linux-image-3.19.0-61-generic, linux-image-3.19.0-61-powerpc-smp, linux-lts-vivid
  • USN-3021-2: linux-ti-omap4, linux-image-3.2.0-1483-omap4
  • USN-2989-1: linux-image-3.13.0-87-powerpc64-smp, linux-image-3.13.0-87-powerpc-e500mc, linux-image-3.13.0-87-generic-lpae, linux-image-3.13.0-87-lowlatency, linux-image-3.13.0-87-powerpc64-emb, linux-image-extra-3.13.0-87-generic, linux-image-3.13.0-87-powerpc-smp, linux-image-3.13.0-87-powerpc-e500, linux, linux-image-3.13.0-87-generic
  • USN-2965-3: linux-raspi2, linux-image-4.4.0-1010-raspi2
  • USN-2965-4: linux-snapdragon, linux-image-4.4.0-1013-snapdragon
  • USN-2965-1: linux-image-4.4.0-22-powerpc-smp, linux-image-4.4.0-22-generic-lpae, linux-image-4.4.0-22-powerpc64-smp, linux-image-extra-4.4.0-22-generic, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-lowlatency, linux-image-4.4.0-22-powerpc-e500mc, linux-image-4.4.0-22-powerpc64-emb, linux
  • USN-3002-1: linux-image-4.2.0-38-lowlatency, linux-image-4.2.0-38-powerpc64-smp, linux-image-4.2.0-38-powerpc64-emb, linux-image-4.2.0-38-powerpc-e500mc, linux-image-4.2.0-38-powerpc-smp, linux-lts-wily, linux-image-4.2.0-38-generic-lpae, linux-image-extra-4.2.0-38-generic, linux-image-4.2.0-38-generic
  • USN-2965-2: linux-lts-xenial, linux-image-4.4.0-22-powerpc-smp, linux-image-4.4.0-22-generic-lpae, linux-image-4.4.0-22-powerpc64-smp, linux-image-extra-4.4.0-22-generic, linux-image-4.4.0-22-generic, linux-image-4.4.0-22-lowlatency, linux-image-4.4.0-22-powerpc-e500mc, linux-image-4.4.0-22-powerpc64-emb
  • USN-2998-1: linux-image-3.13.0-88-generic, linux-image-3.13.0-88-generic-lpae, linux-lts-trusty
  • USN-3004-1: linux-image-4.2.0-1031-raspi2, linux-raspi2
  • USN-3020-1: linux-lts-vivid, linux-image-extra-3.19.0-64-generic, linux-image-3.19.0-64-lowlatency, linux-image-3.19.0-64-powerpc-e500mc, linux-image-3.19.0-64-powerpc64-emb, linux-image-3.19.0-64-powerpc64-smp, linux-image-3.19.0-64-generic-lpae, linux-image-3.19.0-64-generic, linux-image-3.19.0-64-powerpc-smp
  • USN-3018-2: linux-image-3.13.0-91-generic, linux-lts-trusty, linux-image-3.13.0-91-generic-lpae
  • USN-3018-1: linux-image-extra-3.13.0-91-generic, linux-image-3.13.0-91-powerpc-e500mc, linux-image-3.13.0-91-powerpc-smp, linux-image-3.13.0-91-powerpc64-smp, linux-image-3.13.0-91-generic, linux-image-3.13.0-91-powerpc-e500, linux-image-3.13.0-91-powerpc64-emb, linux-image-3.13.0-91-generic-lpae, linux-image-3.13.0-91-lowlatency, linux
  • USN-3019-1: linux-image-3.16.0-76-powerpc64-smp, linux-image-3.16.0-76-lowlatency, linux-lts-utopic, linux-image-3.16.0-76-powerpc-e500mc, linux-image-3.16.0-76-generic, linux-image-3.16.0-76-powerpc-smp, linux-image-3.16.0-76-generic-lpae, linux-image-3.16.0-76-powerpc64-emb, linux-image-extra-3.16.0-76-generic
  • USN-3017-3: linux-image-4.2.0-41-lowlatency, linux-image-4.2.0-41-powerpc-smp, linux-image-4.2.0-41-powerpc-e500mc, linux-image-4.2.0-41-powerpc64-emb, linux-lts-wily, linux-image-extra-4.2.0-41-generic, linux-image-4.2.0-41-generic-lpae, linux-image-4.2.0-41-generic, linux-image-4.2.0-41-powerpc64-smp
  • USN-3016-1: linux-image-4.4.0-28-lowlatency, linux-image-4.4.0-28-powerpc-e500mc, linux-image-extra-4.4.0-28-generic, linux, linux-image-4.4.0-28-powerpc-smp, linux-image-4.4.0-28-powerpc64-emb, linux-image-4.4.0-28-powerpc64-smp, linux-image-4.4.0-28-generic, linux-image-4.4.0-28-generic-lpae
  • USN-3016-3: linux-image-4.4.0-1019-snapdragon, linux-snapdragon
  • USN-3016-4: linux-lts-xenial, linux-image-4.4.0-28-lowlatency, linux-image-4.4.0-28-powerpc-e500mc, linux-image-extra-4.4.0-28-generic, linux-image-4.4.0-28-powerpc-smp, linux-image-4.4.0-28-powerpc64-emb, linux-image-4.4.0-28-powerpc64-smp, linux-image-4.4.0-28-generic, linux-image-4.4.0-28-generic-lpae
  • USN-3016-2: linux-raspi2, linux-image-4.4.0-1016-raspi2
  • USN-3017-1: linux-image-4.2.0-41-lowlatency, linux-image-4.2.0-41-powerpc-smp, linux-image-4.2.0-41-powerpc-e500mc, linux-image-4.2.0-41-powerpc64-emb, linux-image-4.2.0-41-generic-lpae, linux-image-4.2.0-41-generic, linux-image-4.2.0-41-powerpc64-smp, linux
  • USN-3017-2: linux-image-4.2.0-1033-raspi2, linux-raspi2
  • USN-3005-1: linux-image-4.4.0-24-powerpc-smp, linux-lts-xenial, linux-image-4.4.0-24-powerpc-e500mc, linux-image-4.4.0-24-generic-lpae, linux-image-4.4.0-24-lowlatency, linux-image-4.4.0-24-powerpc64-emb, linux-image-4.4.0-24-generic, linux-image-4.4.0-24-powerpc64-smp, linux-image-extra-4.4.0-24-generic
  • USN-3007-1: linux-raspi2, linux-image-4.4.0-1012-raspi2
  • USN-3006-1: linux-image-4.4.0-24-powerpc-smp, linux-image-4.4.0-24-powerpc-e500mc, linux-image-4.4.0-24-generic-lpae, linux-image-4.4.0-24-lowlatency, linux-image-4.4.0-24-powerpc64-emb, linux-image-4.4.0-24-generic, linux-image-4.4.0-24-powerpc64-smp, linux-image-extra-4.4.0-24-generic, linux

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Further reading