CVE-2011-1659: GNU Glibc

Medium severity, CVSS 5.0. EPSS: 2.9% chance of exploitation in the next 30 days.

Integer overflow in posix/fnmatch.c in the GNU C Library (aka glibc or libc6) 2.13 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a long UTF8 string that is used in an fnmatch call with a crafted pattern argument, a different vulnerability than CVE-2011-1071.

Affected products

• GNU Glibc: up to and including 2.13; version 1.00 only; version 1.01 only; version 1.02 only; version 1.03 only; version 1.04 only; …

Published 2011-04-08. Last modified 2026-06-16.