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Ubuntu 12.04 LTS USN-2597-2 Critical: Kernel Regression Resolved

ubuntu
Calendar Grey May 9, 2015
Dist Ubuntu Esm H88
USN-2598-1 tackles a bug in the Linux kernel that might lead to system instability in certain scenarios.
USN-2597-1 Introduced a regression in the Linux kernel.

Summary

USN-2597-1 Introduced a regression in the Linux kernel.

Software Description:

- 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.

Topics%20covered

Topics Covered

security advisory ubuntu system crash linux-lts-trusty kernel regression path name auditing

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-52-generic   3.13.0-52.86~precise1
  linux-image-3.13.0-52-generic-lpae  3.13.0-52.86~precise1

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

References

https://ubuntu.com/security/notices/USN-2597-2

https://ubuntu.com/security/notices/USN-2597-1

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1450442

Severity
critical
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Critical

May 08, 2015

Topics%20covered

Topics Covered

security advisory ubuntu system crash linux-lts-trusty kernel regression path name auditing

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-52.86~precise1

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