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This bug was initially created as a copy of Bug #1899593

I am copying this bug because: to track fix for RHEL8



-  Description of problem:

sssd is crashing with an error - kernel: sssd_be[ ]: segfault at 8 ip 00007fa2c9d08a8e sp 00007ffe81a822d0 error 4 in libsss_util.so[7fa2c9ce9000+8d000]


-  Version-Release number of selected component (if applicable):

RHEL 7.9
sssd-1.16.5-10.el7_9.5.x86_64


-  How reproducible:

Randomly but frequently post upgrading to RHEL 7.9


-  Steps to Reproduce:

1. Configure sssd in id_provider = ldap mode. 
2. Upgrade system to RHEL 7.9 (sssd-1.16.5-10.el7_9.5.x86_64)


-  Actual results:

sssd_be crashes randomly


-  Expected results:

sssd_be shouldn't crash

Pushed PR: https://github.com/SSSD/sssd/pull/5414

* `master`
    * ff24d1538af88f83d0a3cc2817952cf70e7ca580 - SYSDB: merge_res_sysdb_attrs() fixed to avoid NULL ptr in msgs[]
* `sssd-1-16`
    * 9ace3a7899e6b3753ef428088303e0a646db4096 - SYSDB: merge_res_sysdb_attrs() fixed to avoid NULL ptr in msgs[]

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (sssd bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1666