From: Howard Chu <hyc@openldap.org>
Date: Mon, 6 Mar 2023 16:47:44 +0000 (+0000)
Subject: ITS#8447 fix cursor_put(MDB_CURRENT) on DUPSORT DB with different-sized data
X-Git-Tag: LMDB_0.9.31~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76bad923f787462ecd969c273cc92a67f8633d96;p=thirdparty%2Fopenldap.git

ITS#8447 fix cursor_put(MDB_CURRENT) on DUPSORT DB with different-sized data
---

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 931517133b..deb6779640 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -6963,11 +6963,14 @@ current:
 			else if (!(mc->mc_flags & C_SUB))
 				memcpy(olddata.mv_data, data->mv_data, data->mv_size);
 			else {
+				if (key->mv_size != NODEKSZ(leaf))
+					goto new_ksize;
 				memcpy(NODEKEY(leaf), key->mv_data, key->mv_size);
 				goto fix_parent;
 			}
 			return MDB_SUCCESS;
 		}
+new_ksize:
 		mdb_node_del(mc, 0);
 	}