Use After Free Affecting kernel-debug-modules package, versions <0:4.18.0-305.el8


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELDEBUGMODULES-2580053
  • published10 Apr 2022
  • disclosed7 Jan 2021

Introduced: 7 Jan 2021

CVE-2020-27835  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-debug-modules to version 0:4.18.0-305.el8 or higher.
This issue was patched in ELSA-2021-1578.

NVD Description

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

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.

CVSS Scores

version 3.1