CVE-2023-40546

MEDIUM 6.2

Shim: out-of-bounds read printing error messages

CVSS Score

6.2

EPSS Score

0.0%

EPSS Percentile

0th

A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.

CWE	CWE-476
Vendor	red hat
Product	red hat enterprise linux 7
Published	Jan 29, 2024
Last Updated	Nov 20, 2025

Stay Ahead of the Next One

Get instant alerts for red hat red hat enterprise linux 7

Be the first to know when new medium vulnerabilities affecting red hat red hat enterprise linux 7 are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 7

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗