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Ubuntu 14.04 LTS USN-2717-1 Critical: DoS Threat in Kernel

ubuntu
Calendar Grey August 18, 2015
Scroller Ubuntu
Ubuntu 14.04 LTS encounters a severe kernel problem leading to system instability; upgrade promptly to maintain safety.
The system could be made to crash under certain conditions.

Summary

The system could be made to crash under certain conditions.

Software Description:

- linux-lts-utopic: Linux hardware enablement kernel from Utopic

Details:

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel's

SCTP address configuration lists when using Address Configuration Change

(ASCONF) options on a socket. An unprivileged local user could exploit this

flaw to cause a denial of service (system crash).

Topics%20covered

Topics Covered

security advisory denial of service update instructions kernel issue ubuntu system crash

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.16.0-46-generic   3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-generic-lpae  3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-lowlatency  3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-powerpc-e500mc  3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-powerpc-smp  3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-powerpc64-emb  3.16.0-46.62~14.04.1
  linux-image-3.16.0-46-powerpc64-smp  3.16.0-46.62~14.04.1

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

https://ubuntu.com/security/notices/USN-2717-1

CVE-2015-3212

Severity
critical
Lowest
Low
Medium
High
Critical

August 18, 2015

Topics%20covered

Topics Covered

security advisory denial of service update instructions kernel issue ubuntu system crash

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-46.62~14.04.1

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