From: Quanah Gibson-Mount <quanah@openldap.org>
Date: Sun, 3 May 2009 23:54:09 +0000 (+0000)
Subject: Don't underflow malloc'd memory in hdb_fix_dn()
X-Git-Tag: OPENLDAP_REL_ENG_2_4_17~106
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=c9fc6b4cc49fb299b222bffe8aa920181f2de9b0;p=openldap

Don't underflow malloc'd memory in hdb_fix_dn()
---

diff --git a/servers/slapd/back-bdb/dn2id.c b/servers/slapd/back-bdb/dn2id.c
index 7a022db165..f4c528fa48 100644
--- a/servers/slapd/back-bdb/dn2id.c
+++ b/servers/slapd/back-bdb/dn2id.c
@@ -529,8 +529,8 @@ int hdb_fix_dn(
 		}
 	}
 	BEI(e)->bei_modrdns = max;
-	ptr[-1] = '\0';
-	nptr[-1] = '\0';
+	if ( ptr > e->e_name.bv_val ) ptr[-1] = '\0';
+	if ( nptr > e->e_nname.bv_val ) nptr[-1] = '\0';
 
 	return 0;
 }