NULL Pointer Dereference Affecting shim package, versions <15.8-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.44% (37th percentile)

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  • Snyk IDSNYK-DEBIAN14-SHIM-11768111
  • published10 Aug 2025
  • disclosed29 Jan 2024

Introduced: 29 Jan 2024

CVE-2023-40546  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:14 shim to version 15.8-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim package and not the shim package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1