Improper Preservation of Permissions Affecting kernel-tools-devel package, versions <0:4.14.268-205.500.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
12.09% (96th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELTOOLSDEVEL-2419727
  • published9 Mar 2022
  • disclosed10 Mar 2022

Introduced: 9 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 Amazon-Linux:2 kernel-tools-devel to version 0:4.14.268-205.500.amzn2 or higher.
This issue was patched in ALAS2-2022-1761.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-devel package and not the kernel-tools-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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