<p>Upgrade <code>RHEL:8</code> <code>kernel-cross-headers</code> to version 0:4.18.0-305.7.1.el8_4 or higher.<br>This issue was patched in <code>RHSA-2021:2570</code>.</p>

Improper Verification of Cryptographic Signature Affecting kernel-cross-headers package, versions <0:4.18.0-305.7.1.el8_4

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0.05% (22^nd percentile)

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Snyk ID SNYK-RHEL8-KERNELCROSSHEADERS-4101617
published 26 Jul 2021
disclosed 15 Sep 2020

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Introduced: 15 Sep 2020

CVE-2020-26541 Open this link in a new tab CWE-347 Open this link in a new tab CWE-200 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-cross-headers to version 0:4.18.0-305.7.1.el8_4 or higher.
This issue was patched in RHSA-2021:2570.

NVD Description

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

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

High
User Interaction (UI)

Required

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

High
Availability (A)

High

Improper Verification of Cryptographic Signature Affecting kernel-cross-headers package, versions <0:4.18.0-305.7.1.el8_4

Severity

Based on Red Hat Enterprise Linux security rating