Audit Linux privileges now to limit compromise, escalation, and system-wide damage. Review Linux Privileges×

Alerts This Week
Warning Icon 1 523
Alerts This Week
Warning Icon 1 523

Ubuntu 14.04 LTS USN-2999-1 Critical: eCryptfs Denial of Service

ubuntu
Calendar Grey June 10, 2016
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

- linux: Linux kernel

Details:

Jann Horn discovered that eCryptfs improperly attempted to use the mmap()

handler of a lower filesystem that did not implement one, causing a

recursive page fault to occur. A local unprivileged attacker could use to

cause a denial of service (system crash) or possibly execute arbitrary code

with administrative privileges.

Topics%20covered

Topics Covered

security advisory denial of service critical kernel local attack ubuntu eCryptfs

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-88-generic   3.13.0-88.135
  linux-image-3.13.0-88-generic-lpae  3.13.0-88.135
  linux-image-3.13.0-88-lowlatency  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-e500  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-e500mc  3.13.0-88.135
  linux-image-3.13.0-88-powerpc-smp  3.13.0-88.135
  linux-image-3.13.0-88-powerpc64-emb  3.13.0-88.135
  linux-image-3.13.0-88-powerpc64-smp  3.13.0-88.135

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

https://ubuntu.com/security/notices/USN-2999-1

CVE-2016-1583

Severity
critical
Lowest
Low
Medium
High
Critical

June 10, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical kernel local attack ubuntu eCryptfs

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-88.135

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.