Use After Free Affecting kernel-tools-debuginfo package, versions <0:4.14.214-118.339.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.06% (30th 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 Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-AMZN201803-KERNELTOOLSDEBUGINFO-1725376
  • published27 Sept 2021
  • disclosed9 Dec 2020

Introduced: 9 Dec 2020

CVE-2020-29660  (opens in a new tab)
CWE-416  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-tools-debuginfo to version 0:4.14.214-118.339.amzn1 or higher.
This issue was patched in ALAS-2021-1477.

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.

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.

CVSS Scores

version 3.1