NULL Pointer Dereference Affecting python-perf package, versions <0:4.14.291-218.527.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHONPERF-3022777
  • published14 Sept 2022
  • disclosed31 Aug 2022

Introduced: 31 Aug 2022

CVE-2022-2153  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python-perf to version 0:4.14.291-218.527.amzn2 or higher.
This issue was patched in ALAS2-2022-1838.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-perf package and not the python-perf 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 Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

CVSS Scores

version 3.1