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ITS#8722 fix FIRST_DUP/LAST_DUP cursor bounds check

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mdb.RE/0.9
Howard Chu 7 years ago committed by Quanah Gibson-Mount
parent 264263484b
commit 98b2910ee8
1 changed files with 6 additions and 0 deletions
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  1. 6
      libraries/liblmdb/mdb.c

6
libraries/liblmdb/mdb.c
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@ -6426,6 +6426,11 @@ fetchm:
rc = MDB_INCOMPATIBLE; rc = MDB_INCOMPATIBLE;
break; break;
} }
if (mc->mc_ki[mc->mc_top] >= NUMKEYS(mc->mc_pg[mc->mc_top])) {
mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]);
rc = MDB_NOTFOUND;
break;
}
{ {
MDB_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); MDB_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) { if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
@ -7080,6 +7085,7 @@ mdb_cursor_del(MDB_cursor *mc, unsigned int flags)
if (!(m2->mc_flags & C_INITIALIZED)) continue; if (!(m2->mc_flags & C_INITIALIZED)) continue;
if (m2->mc_pg[mc->mc_top] == mp) { if (m2->mc_pg[mc->mc_top] == mp) {
MDB_node *n2 = leaf; MDB_node *n2 = leaf;
if (m2->mc_ki[mc->mc_top] >= NUMKEYS(mp)) continue;
if (m2->mc_ki[mc->mc_top] != mc->mc_ki[mc->mc_top]) { if (m2->mc_ki[mc->mc_top] != mc->mc_ki[mc->mc_top]) {
n2 = NODEPTR(mp, m2->mc_ki[mc->mc_top]); n2 = NODEPTR(mp, m2->mc_ki[mc->mc_top]);
if (n2->mn_flags & F_SUBDATA) continue; if (n2->mn_flags & F_SUBDATA) continue;

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