Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Ubuntu 12.04 LTS: USN-3104-2 Critical Race Condition in linux-ti-omap4

ubuntu
Calendar Grey October 20, 2016
Scroller Ubuntu
Crucial Ubuntu linux-ti-omap4 patch addresses a security loophole enabling unauthorized admin entry via memory management vulnerabilities.
The system could be made to run programs as an administrator.

Summary

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

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

It was discovered that a race condition existed in the memory manager of

the Linux kernel when handling copy-on-write breakage of private read-only

memory mappings. A local attacker could use this to gain administrative

privileges.

Topics%20covered

Topics Covered

security advisory race condition memory management ubuntu admin access ompat4

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-1491-omap4    3.2.0-1491.118

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-3104-2

https://ubuntu.com/security/notices/USN-3104-1

CVE-2016-5195

Severity
critical
Lowest
Low
Medium
High
Critical

October 20, 2016

Topics%20covered

Topics Covered

security advisory race condition memory management ubuntu admin access ompat4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1491.118

Get the latest News and Insights

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