In check_user_token in util.c in the Yubico PAM module (aka pam_yubico) 2.18 through 2.25, successful logins can leak file descriptors to the auth mapping file, which can lead to information disclosure (serial number of a device) and/or DoS (reaching the maximum number of file descriptors). Upstream Issue: https://github.com/Yubico/yubico-pam/issues/136 Upstream patch: https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba
Created pam_yubico tracking bugs for this issue: Affects: fedora-all [bug 1564641] Affects: epel-all [bug 1564640]
updates are pending push to testing.