Hi,
After the recent glibc update to 2.31-150300.52.2 (suspected, but reverted on
one machine and not seen since then there), I receive errors in saslauthd and
radiusd after ~1/2 day of operation:

2023-10-04T04:46:29.859746+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_env.so): /lib64/security/pam_env.so: failed to map
segment from shared object
2023-10-04T04:46:29.859863+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_env.so
2023-10-04T04:46:29.859913+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_localuser.so): /lib64/security/pam_localuser.so:
failed to map segment from shared object
2023-10-04T04:46:29.859941+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_localuser.so
2023-10-04T04:46:29.859963+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_unix.so): /lib64/security/pam_unix.so: failed to map
segment from shared object
2023-10-04T04:46:29.859986+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_unix.so
2023-10-04T04:46:29.860039+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_listfile.so): /lib64/security/pam_listfile.so:
failed to map segment from shared object
2023-10-04T04:46:29.860092+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_listfile.so
2023-10-04T04:46:29.860119+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_deny.so): /lib64/security/pam_deny.so: failed to map
segment from shared object
2023-10-04T04:46:29.860151+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_deny.so
2023-10-04T04:46:29.860190+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_ldap.so): /lib64/security/pam_ldap.so: failed to map
segment from shared object
2023-10-04T04:46:29.860226+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_ldap.so
2023-10-04T04:46:29.860474+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_cracklib.so): /lib64/security/pam_cracklib.so:
failed to map segment from shared object
2023-10-04T04:46:29.860525+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_cracklib.so
2023-10-04T04:46:29.860774+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_systemd.so): /lib64/security/pam_systemd.so: failed
to map segment from shared object
2023-10-04T04:46:29.860824+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_systemd.so
2023-10-04T04:46:29.860848+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_limits.so): /lib64/security/pam_limits.so: failed to
map segment from shared object
2023-10-04T04:46:29.860873+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_limits.so
2023-10-04T04:46:29.860895+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_umask.so): /lib64/security/pam_umask.so: failed to
map segment from shared object
2023-10-04T04:46:29.860916+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_umask.so
2023-10-04T04:46:29.861097+02:00 zephyrus saslauthd[2187]: PAM unable to
dlopen(/lib64/security/pam_warn.so): /lib64/security/pam_warn.so: failed to map
segment from shared object
2023-10-04T04:46:29.861146+02:00 zephyrus saslauthd[2187]: PAM adding faulty
module: /lib64/security/pam_warn.so
2023-10-04T04:46:29.861170+02:00 zephyrus saslauthd[2187]: DEBUG: auth_pam:
pam_authenticate failed: Module is unknown
2023-10-04T04:46:29.861197+02:00 zephyrus saslauthd[2187]:                 :
auth failure: [user=saurabh] [service=smtp] [realm=] [mech=pam] [reason=PAM
auth error]

Example for radiusd:
023-10-02T20:09:31.374648+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_unix.so): libnsl.so.2: failed to map segment from
shared object
2023-10-02T20:09:31.375332+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_unix.so
2023-10-02T20:09:31.375457+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_cracklib.so): /lib64/security/pam_cracklib.so:
cannot apply additional memory protection after relocation: Cannot allocate
memory
2023-10-02T20:09:31.375684+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_cracklib.so
2023-10-02T20:09:31.375835+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_systemd.so): libp11-kit.so.0: cannot change memory
protections
2023-10-02T20:09:31.375957+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_systemd.so
2023-10-02T20:09:31.376321+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_umask.so): /lib64/security/pam_umask.so: cannot
change memory protections
2023-10-02T20:09:31.376486+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_umask.so
2023-10-02T20:09:31.376591+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_warn.so): /lib64/security/pam_warn.so: failed to map
segment from shared object
2023-10-02T20:09:31.376770+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_warn.so
2023-10-02T20:09:31.376869+02:00 proxy radiusd[3986]: PAM unable to
dlopen(/lib64/security/pam_deny.so): /lib64/security/pam_deny.so: failed to map
segment from shared object
2023-10-02T20:09:31.376962+02:00 proxy radiusd[3986]: PAM adding faulty module:
/lib64/security/pam_deny.so

The issue can be fixed temporarily by restarting the affected process. A reboot
did not help to resolve the issue.