Use After Free Affecting kernel package, versions <0:4.14.104-78.84.amzn1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.07% (35th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1717088
  • published27 Sept 2021
  • disclosed18 Feb 2019

Introduced: 18 Feb 2019

CVE-2019-8912  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:4.14.104-78.84.amzn1 or higher.
This issue was patched in ALAS-2019-1167.

NVD Description

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

In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr.

CVSS Scores

version 3.1