Race Condition Affecting kernel-tools-debuginfo package, versions <0:4.4.23-31.54.amzn1


Severity

Recommended
critical

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
81.66% (99th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNELTOOLSDEBUGINFO-1703003
  • published27 Sept 2021
  • disclosed10 Nov 2016

Introduced: 10 Nov 2016

CVE-2016-5195  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-tools-debuginfo to version 0:4.4.23-31.54.amzn1 or higher.
This issue was patched in ALAS-2016-757.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-debuginfo package and not the kernel-tools-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

References

CVSS Scores

version 3.1