Buffer Overflow Affecting clamav1.5-lib-debuginfo package, versions <0:1.5.3-1.amzn2023.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.56% (44th percentile)

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  • Snyk IDSNYK-AMZN2023-CLAMAV15LIBDEBUGINFO-18063848
  • published21 Jul 2026
  • disclosed1 Jul 2026

Introduced: 1 Jul 2026

CVE-2026-20214  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 clamav1.5-lib-debuginfo to version 0:1.5.3-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1955.

NVD Description

Note: Versions mentioned in the description apply only to the upstream clamav1.5-lib-debuginfo package and not the clamav1.5-lib-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A vulnerability in the FSG file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.

This vulnerability is due to improper boundary checks for content in FSG files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains portable executable content compressed with FSG to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

CVSS Base Scores

version 3.1