Memory management issue in the sssd_nss_ex interface causing ns-slapd process to crash.

Solution Verified - Updated -

Issue

  • Memory management issue in the sssd_nss_ex interface causing ns-slapd process on IPA server to crash.

  • IPA 389-ds-base crash in krb5-libs - k5_copy_etypes list out of bound.

  • ns-slapd segfaults after upgrading to RHEL 7.5
Apr 11 18:34:57 XXXX kernel: ns-slapd[41442]: segfault at 970ea724 ip                                                                                                                                                           00007f56610ef3e5 sp 00007f5632f8a8a0 error 4 in libtcmalloc.so.4.4.5[7f56610b90                                                                                                                                                          00+46000]
  • After applying errata RHEA-2018:0974, nslcd fails to connect but ldapsearch works. From the logs
Apr 17 14:38:56 XXXX nslcd[33172]: [8b4567] <group/member="nslcd"> ldap_start_tls_s() failed (uri=ldap://XXXXX): Connect error

Environment

Red Hat Enterprise Linux 7.5
389-ds-base-1.3.7.5-19.el7_5
krb5-libs-1.15.1-19.el7.x86_64
openldap-2.4.44-5.el7.x86_64
openldap-clients-2.4.44-5.el7.x86_64

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