Use After Free Affecting kernel-abi-whitelists package, versions <0:3.10.0-1160.42.2.el7


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELABIWHITELISTS-2587830
  • published10 Apr 2022
  • disclosed2 Mar 2022

Introduced: 2 Mar 2022

CVE-2021-3715  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-abi-whitelists to version 0:3.10.0-1160.42.2.el7 or higher.
This issue was patched in ELSA-2021-3438.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-abi-whitelists package and not the kernel-abi-whitelists package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS Scores

version 3.1