Executive Summary

Summary
Title Linux kernel (Utopic HWE) vulnerability
Informations
Name USN-2599-2 First vendor Publication 2015-05-09
Vendor Ubuntu Last vendor Modification 2015-05-09
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score Not Defined Attack Range Not Defined
Cvss Impact Score Not Defined Attack Complexity Not Defined
Cvss Expoit Score Not Defined Authentication Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

USN-2599-1 Introduced a regression in the Linux kernel.

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

Details:

USN-2599-1 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:

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-37-generic 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-generic-lpae 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-lowlatency 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-powerpc-e500mc 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-powerpc-smp 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-powerpc64-emb 3.16.0-37.51~14.04.1
linux-image-3.16.0-37-powerpc64-smp 3.16.0-37.51~14.04.1

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

References:
http://www.ubuntu.com/usn/usn-2599-2
http://www.ubuntu.com/usn/usn-2599-1
https://launchpad.net/bugs/1450442

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-37.51~14.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-2599-2

Alert History

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0
1
Date Informations
2015-05-12 13:28:22
  • Multiple Updates
2015-05-09 05:26:13
  • First insertion