From: Todd C. Miller <Todd.Miller@sudo.ws>
Date: Mon, 18 Mar 2019 20:08:21 +0000 (-0600)
Subject: Fix the counting of supplementary groups on AIX.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=731e796711d4554f67d7f14aaf5b9f15696090cc;p=sudo

Fix the counting of supplementary groups on AIX.
We should not assume that basegid will be present in the list of
gids returned by getgrset().
---

diff --git a/lib/util/getgrouplist.c b/lib/util/getgrouplist.c
index 253736385..aff795be0 100644
--- a/lib/util/getgrouplist.c
+++ b/lib/util/getgrouplist.c
@@ -144,6 +144,7 @@ sudo_getgrouplist2_v1(const char *name, GETGROUPS_T basegid,
 	/* Dynamically-sized group vector, count groups and alloc. */
 	grpsize = 1;	/* reserve one for basegid */
 	if (*grset != '\0') {
+	    grpsize++;	/* at least one supplementary group */
 	    for (cp = grset; *cp != '\0'; cp++) {
 		if (*cp == ',')
 		    grpsize++;