USN-2597-2: Linux kernel (Trusty HWE) regression | Ubuntu security notices

Packages

linux-lts-trusty - Linux hardware enablement kernel from Trusty

Details

USN-2597-1 fixed vulnerabilities in the Linux kernel, however an unrelated
regression in the auditing of some path names was introduced. Due to the
regression the system could crash under certain conditions.

This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

A race condition between chown() and execve() was discovered in the Linux
kernel. A local attacker could exploit this race by using chown on a
setuid-user-binary to gain administrative privileges.

USN-2597-1 fixed vulnerabilities in the Linux kernel, however an unrelated
regression in the auditing of some path names was introduced. Due to the
regression the system could crash under certain conditions.

This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

A race condition between chown() and execve() was discovered in the Linux
kernel. A local attacker could exploit this race by using chown on a
setuid-user-binary to gain administrative privileges.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

Ubuntu Release	Package Version
12.04 precise	linux-image-3.13.0-52-generic – 3.13.0-52.86~precise1
12.04 precise	linux-image-3.13.0-52-generic-lpae – 3.13.0-52.86~precise1

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References

https://launchpad.net/bugs/XXXXXX