Use After Free Affecting kernel-tools package, versions <0:4.9.70-22.55.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNELTOOLS-1710353
  • published27 Sept 2021
  • disclosed15 Nov 2017

Introduced: 15 Nov 2017

CVE-2017-15115  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-tools to version 0:4.9.70-22.55.amzn1 or higher.
This issue was patched in ALAS-2017-937.

NVD Description

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

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.

CVSS Scores

version 3.1