Improper Preservation of Permissions Affecting kernel-rt-debug-modules-extra package, versions <0:4.18.0-348.20.1.rt7.150.el8_5


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
3.72% (92nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CENTOS8-KERNELRTDEBUGMODULESEXTRA-2419277
  • published8 Mar 2022
  • disclosed7 Mar 2022

Introduced: 7 Mar 2022

CVE-2022-0847  (opens in a new tab)
CWE-281  (opens in a new tab)
CWE-909  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-rt-debug-modules-extra to version 0:4.18.0-348.20.1.rt7.150.el8_5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules-extra package and not the kernel-rt-debug-modules-extra package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.

CVSS Scores

version 3.1