CVE-2023-40551

shim: out of bounds read when parsing MZ binaries

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Severity

Moderate

Red Hat Product Security

5.1

CVSS 3.1

Review impact separately from score.

Published · January 23, 2024

Updated · June 26, 2026

Description

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H

CWE-125 · Out-of-bounds Read