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MDEV-25420 JSON_TABLE: ASAN heap-buffer-overflow in Protocol::net_store_data or consequent failur es.

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fixed changed.
This commit is contained in:
Alexey Botchkov
2021-04-17 09:25:23 +04:00
parent b0817ff8de
commit a4353c25ca
3 changed files with 8 additions and 14 deletions
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3
sql/json_table.cc
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@ -749,6 +749,7 @@ bool Create_json_table::add_json_table_fields(THD *thd, TABLE *table,
Create_field *sql_f= jc->m_field;
Record_addr addr(!(sql_f->flags & NOT_NULL_FLAG));
Bit_addr bit(addr.null());
uint uneven_delta;
sql_f->prepare_stage2(table->file, table->file->ha_table_flags());
@ -760,7 +761,9 @@ bool Create_json_table::add_json_table_fields(THD *thd, TABLE *table,
if (!f)
goto err_exit;
f->init(table);
uneven_delta= m_uneven_bit_length;
add_field(table, f, fieldnr++, 0);
m_uneven_bit[current_counter]+= (m_uneven_bit_length - uneven_delta);
}
share->fields= fieldnr;