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-rw-r--r--src/responder/pac/pacsrv_cmd.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/responder/pac/pacsrv_cmd.c b/src/responder/pac/pacsrv_cmd.c
index e5152006..bcdcdc46 100644
--- a/src/responder/pac/pacsrv_cmd.c
+++ b/src/responder/pac/pacsrv_cmd.c
@@ -575,6 +575,20 @@ static errno_t save_pac_user(struct pac_req_ctx *pr_ctx)
ret = sysdb_search_user_by_uid(tmp_ctx, sysdb, pr_ctx->dom,
pwd->pw_uid, attrs, &msg);
if (ret == ENOENT) {
+ if (pwd->pw_gid == 0 && !pr_ctx->dom->mpg) {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Primary group RID from the PAC " \
+ "cannot be translated into a GID for " \
+ "user [%s]. Typically this happens " \
+ "when UIDs and GIDs are read from AD " \
+ "and the primary AD group does not " \
+ "have a GID assigned. Make sure the " \
+ "user is created by the ID provider " \
+ "before GSSAPI based authentication " \
+ "is used in this case.", pwd->pw_name));
+ ret = EINVAL;
+ goto done;
+ }
+
ret = sysdb_store_user(sysdb, pr_ctx->dom, pwd->pw_name, NULL,
pwd->pw_uid, pwd->pw_gid, pwd->pw_gecos,
pwd->pw_dir,