Use After Free Affecting kernel-modules package, versions <0:4.18.0-240.el8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.4% (75th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELMODULES-2566003
  • published10 Apr 2022
  • disclosed8 Dec 2019

Introduced: 8 Dec 2019

CVE-2019-19447  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-modules to version 0:4.18.0-240.el8 or higher.
This issue was patched in ELSA-2020-4431.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules package and not the kernel-modules package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list in fs/ext4/super.c.

CVSS Scores

version 3.1