<p>Upgrade <code>RHEL:8</code> <code>kernel-modules</code> to version 0:4.18.0-348.el8 or higher.<br>This issue was patched in <code>RHSA-2021:4356</code>.</p>

Information Exposure Affecting kernel-modules package, versions <0:4.18.0-348.el8

Threat Intelligence

0.05% (18^th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk ID SNYK-RHEL8-KERNELMODULES-4120828
published 26 Jul 2021
disclosed 30 Apr 2021

Report a new vulnerability Found a mistake?

Introduced: 30 Apr 2021

CVE-2021-31829 Open this link in a new tab CWE-200 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-modules to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.

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 RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

None
Availability (A)

None