From: Howard Chu Date: Fri, 12 Jun 2026 14:12:00 +0000 (+0100) Subject: ITS#10522 LMDB: reject 0-length values in DUPSORT DBs X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2d9ea1ff983640b37601967006fce3ed2d49681;p=thirdparty%2Fopenldap.git ITS#10522 LMDB: reject 0-length values in DUPSORT DBs --- diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index 7c099a2aa0..f4f17d80cd 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -8571,10 +8571,10 @@ _mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data, return MDB_BAD_VALSIZE; #if SIZE_MAX > MAXDATASIZE - if (data->mv_size > ((mc->mc_db->md_flags & MDB_DUPSORT) ? ENV_MAXKEY(env) : MAXDATASIZE)) + if (data->mv_size-1 >= ((mc->mc_db->md_flags & MDB_DUPSORT) ? ENV_MAXKEY(env) : MAXDATASIZE)) return MDB_BAD_VALSIZE; #else - if ((mc->mc_db->md_flags & MDB_DUPSORT) && data->mv_size > ENV_MAXKEY(env)) + if ((mc->mc_db->md_flags & MDB_DUPSORT) && data->mv_size-1 >= ENV_MAXKEY(env)) return MDB_BAD_VALSIZE; #endif