CVE-2010-2547: Debian Linux

High severity, CVSS 8.1. EPSS: 5.3% chance of exploitation in the next 30 days.

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.

Affected products

• Debian Debian Linux: version 5.0 only
• Fedoraproject Fedora: version 13 only
• Gnupg Gnupg: from 2.0.0, up to and including 2.0.16

Published 2010-08-05. Last modified 2026-06-16.