Information Exposure Affecting kernel-rt-trace package, versions <0:3.10.0-327.rt56.204.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTTRACE-4567040
  • published26 Jul 2021
  • disclosed8 Dec 2014

Introduced: 8 Dec 2014

CVE-2014-9419  (opens in a new tab)
CWE-200  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:7 kernel-rt-trace to version 0:3.10.0-327.rt56.204.el7 or higher.
This issue was patched in RHSA-2015:2411.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace package and not the kernel-rt-trace package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address.

CVSS Scores

version 3.1