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ITS#10522 LMDB: reject 0-length values in DUPSORT DBs

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Howard Chu 2026-06-12 15:12:00 +01:00
parent 7bcb4d05da
commit a2d9ea1ff9
1 changed files with 2 additions and 2 deletions
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4
libraries/liblmdb/mdb.c
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@ -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