This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-20347 →
Categories
DEBIAN-CVE-2026-20347

A vulnerability in the Mach-O file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other...

Original description

The description as published by the source.

A vulnerability in the Mach-O file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file 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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 clamav
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13 clamav
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14 clamav
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6+dfsg-1"}]}]

References

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