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  1. MariaDB Server
  2. MDEV-19380

ASAN heap-use-after-free in Protocol::net_store_data

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      Description

      CREATE TABLE t1 (i int);
      INSERT INTO t1 VALUES (1),(2),(3);
       
      SELECT (SELECT MIN('foo') OVER () FROM t1 LIMIT 1);
      

      10.2 810f014ca7a705381e110cb2664

      ==14283==ERROR: AddressSanitizer: heap-use-after-free on address 0x6190000f8dea at pc 0x7f8196a54935 bp 0x7f817e383b30 sp 0x7f817e3832d8
      READ of size 3 at 0x6190000f8dea thread T27
          #0 0x7f8196a54934 in __asan_memcpy (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x8c934)
          #1 0x558870257c6e in Protocol::net_store_data(unsigned char const*, unsigned long) /10.2/sql/protocol.cc:61
          #2 0x55887025d849 in Protocol::store_string_aux(char const*, unsigned long, charset_info_st const*, charset_info_st const*) /10.2/sql/protocol.cc:1092
          #3 0x55887025e009 in Protocol_text::store(char const*, unsigned long, charset_info_st const*) /10.2/sql/protocol.cc:1129
          #4 0x558870a461be in Item::send(Protocol*, String*) /10.2/sql/item.cc:6893
          #5 0x55887025cf85 in Protocol::send_result_set_row(List<Item>*) /10.2/sql/protocol.cc:979
          #6 0x5588703771bf in select_send::send_data(List<Item>&) /10.2/sql/sql_class.cc:2722
          #7 0x5588704c8f06 in JOIN::exec_inner() /10.2/sql/sql_select.cc:3500
          #8 0x5588704c7d83 in JOIN::exec() /10.2/sql/sql_select.cc:3419
          #9 0x5588704cb0d0 in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /10.2/sql/sql_select.cc:3819
          #10 0x5588704aa80e in handle_select(THD*, LEX*, select_result*, unsigned long) /10.2/sql/sql_select.cc:376
          #11 0x558870432322 in execute_sqlcom_select /10.2/sql/sql_parse.cc:6479
          #12 0x55887041f7e8 in mysql_execute_command(THD*) /10.2/sql/sql_parse.cc:3537
          #13 0x55887043aa86 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /10.2/sql/sql_parse.cc:8013
          #14 0x55887041613b in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /10.2/sql/sql_parse.cc:1833
          #15 0x5588704132ba in do_command(THD*) /10.2/sql/sql_parse.cc:1387
          #16 0x55887073bce5 in do_handle_one_connection(CONNECT*) /10.2/sql/sql_connect.cc:1335
          #17 0x55887073b6ed in handle_one_connection /10.2/sql/sql_connect.cc:1241
          #18 0x5588718efa71 in pfs_spawn_thread /10.2/storage/perfschema/pfs.cc:1862
          #19 0x7f819592a6b9 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76b9)
          #20 0x7f8194dbf41c in clone (/lib/x86_64-linux-gnu/libc.so.6+0x10741c)
      

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            • Assignee:
              varun Varun Gupta
              Reporter:
              alice Alice Sherepa
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              • Created:
                Updated: