CVE-2009-0887: Linux-Pam

Medium severity, CVSS 6.6. EPSS: 1.9% chance of exploitation in the next 30 days.

Integer signedness error in the _pam_StrTok function in libpam/pam_misc.c in Linux-PAM (aka pam) 1.0.3 and earlier, when a configuration file contains non-ASCII usernames, might allow remote attackers to cause a denial of service, and might allow remote authenticated users to obtain login access with a different user's non-ASCII username, via a login attempt.

Affected products

• Linux-Pam Linux-Pam: up to and including 1.0.3; version 0.99.1.0 only; version 0.99.2.0 only; version 0.99.2.1 only; version 0.99.3.0 only; version 0.99.4.0 only; …

Published 2009-03-12. Last modified 2026-06-16.