Description: low-privileged user privileges escalation
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2009704
 https://www.openwall.com/lists/oss-security/2021/10/14/3
Notes:
Bugs:
upstream:
5.10-upstream-stable:
4.19-upstream-stable:
4.9-upstream-stable:
sid:
5.10-bullseye-security:
4.19-buster-security:
4.9-stretch-security: