Access Restriction Bypass Affecting kernel-debug package, versions <0:2.6.32-573.el6


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS6-KERNELDEBUG-2118088
  • published26 Jul 2021
  • disclosed15 Dec 2014

Introduced: 15 Dec 2014

CVE-2014-8133  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Centos:6 kernel-debug to version 0:2.6.32-573.el6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value.

CVSS Scores

version 3.1