Out-of-Bounds Affecting kernel-debug-core package, versions <0:4.18.0-348.el8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELDEBUGCORE-2591983
  • published10 Apr 2022
  • disclosed28 May 2021

Introduced: 28 May 2021

CVE-2021-20239  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-debug-core to version 0:4.18.0-348.el8 or higher.
This issue was patched in ELSA-2021-4356.

NVD Description

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

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.

CVSS Scores

version 3.1