Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.5, 10.6, 10.1(EOL), 10.2(EOL), 10.3(EOL), 10.4(EOL)
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None
Description
SET NAMES latin1; |
SELECT LEAST( CAST( 0 AS CHAR ), OLD_PASSWORD( 1 ) ); |
Actual result |
MariaDB [(none)]> SELECT LEAST( CAST( 0 AS CHAR ), OLD_PASSWORD( 1 ) ); |
+-----------------------------------------------+ |
| LEAST( CAST( 0 AS CHAR ), OLD_PASSWORD( 1 ) ) | |
+-----------------------------------------------+ |
| 1 |
|
+-----------------------------------------------+ |
1 row in set (0.000 sec) |
Expected result is 0.
Reproducible on 10.1-10.5 with latin1. Not reproducible with utf8. I didn't try other character sets.
Further, on 10.1 / 10.2 (but not on 10.3+) the following returns an ASAN error, I suppose it's a side effect of the above:
SET NAMES latin1; |
SELECT TIME( LEAST( CAST( 0 AS CHAR ), OLD_PASSWORD( 1 ) ) ); |
10.2 1552b254 |
==14630==ERROR: AddressSanitizer: heap-use-after-free on address 0x60d0000318e0 at pc 0x5648a32eac74 bp 0x7f9fd828bc70 sp 0x7f9fd828bc68
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READ of size 1 at 0x60d0000318e0 thread T5
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#0 0x5648a32eac73 in my_strnncollsp_simple /data/src/10.2/strings/ctype-simple.c:182
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#1 0x5648a1dfe409 in sortcmp(String const*, String const*, charset_info_st const*) /data/src/10.2/sql/sql_string.cc:804
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#2 0x5648a233b8e3 in Item_func_min_max::val_str(String*) /data/src/10.2/sql/item_func.cc:2970
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#3 0x5648a2239c5f in Item::temporal_precision(enum_field_types) /data/src/10.2/sql/item.cc:576
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#4 0x5648a2454b0b in Item_temporal_typecast::fix_length_and_dec() /data/src/10.2/sql/item_timefunc.h:1099
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#5 0x5648a231b4c1 in Item_func::fix_fields(THD*, Item**) /data/src/10.2/sql/item_func.cc:229
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#6 0x5648a1b3293c in setup_fields(THD*, Bounds_checked_array<Item*>, List<Item>&, enum_mark_columns, List<Item>*, List<Item>*, bool) /data/src/10.2/sql/sql_base.cc:7186
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#7 0x5648a1cb83f9 in JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*) /data/src/10.2/sql/sql_select.cc:811
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#8 0x5648a1cd5549 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*) /data/src/10.2/sql/sql_select.cc:3796
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#9 0x5648a1cb4aad in handle_select(THD*, LEX*, select_result*, unsigned long) /data/src/10.2/sql/sql_select.cc:361
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#10 0x5648a1c3a2c6 in execute_sqlcom_select /data/src/10.2/sql/sql_parse.cc:6225
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#11 0x5648a1c2861b in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:3532
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#12 0x5648a1c42d48 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:7740
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#13 0x5648a1c1ee06 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1831
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#14 0x5648a1c1be1c in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1384
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#15 0x5648a1f562dd in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1336
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#16 0x5648a1f55cad in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
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#17 0x5648a318c7c2 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
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#18 0x7f9fe3b5d4a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3)
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#19 0x7f9fe20a4d0e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xe8d0e)
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0x60d0000318e0 is located 112 bytes inside of 140-byte region [0x60d000031870,0x60d0000318fc)
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freed by thread T5 here:
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#0 0x7f9fe3e34a10 in free (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1a10)
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#1 0x5648a3292625 in free_memory /data/src/10.2/mysys/safemalloc.c:279
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#2 0x5648a3291c9f in sf_free /data/src/10.2/mysys/safemalloc.c:197
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#3 0x5648a3262aab in my_free /data/src/10.2/mysys/my_malloc.c:218
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#4 0x5648a1a45eaf in String::free() /data/src/10.2/sql/sql_string.h:347
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#5 0x5648a1a66e7e in String::set(char*, unsigned int, charset_info_st const*) /data/src/10.2/sql/sql_string.h:264
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#6 0x5648a23a5536 in Item_func_password::val_str_ascii(String*) /data/src/10.2/sql/item_strfunc.cc:2167
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#7 0x5648a23920b7 in Item_func::val_str_from_val_str_ascii(String*, String*) /data/src/10.2/sql/item_strfunc.cc:82
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#8 0x5648a2143899 in Item_str_ascii_func::val_str(String*) /data/src/10.2/sql/item_strfunc.h:94
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#9 0x5648a233b894 in Item_func_min_max::val_str(String*) /data/src/10.2/sql/item_func.cc:2967
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#10 0x5648a2239c5f in Item::temporal_precision(enum_field_types) /data/src/10.2/sql/item.cc:576
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#11 0x5648a2454b0b in Item_temporal_typecast::fix_length_and_dec() /data/src/10.2/sql/item_timefunc.h:1099
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#12 0x5648a231b4c1 in Item_func::fix_fields(THD*, Item**) /data/src/10.2/sql/item_func.cc:229
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#13 0x5648a1b3293c in setup_fields(THD*, Bounds_checked_array<Item*>, List<Item>&, enum_mark_columns, List<Item>*, List<Item>*, bool) /data/src/10.2/sql/sql_base.cc:7186
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#14 0x5648a1cb83f9 in JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*) /data/src/10.2/sql/sql_select.cc:811
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#15 0x5648a1cd5549 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*) /data/src/10.2/sql/sql_select.cc:3796
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#16 0x5648a1cb4aad in handle_select(THD*, LEX*, select_result*, unsigned long) /data/src/10.2/sql/sql_select.cc:361
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#17 0x5648a1c3a2c6 in execute_sqlcom_select /data/src/10.2/sql/sql_parse.cc:6225
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#18 0x5648a1c2861b in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:3532
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#19 0x5648a1c42d48 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:7740
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#20 0x5648a1c1ee06 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1831
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#21 0x5648a1c1be1c in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1384
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#22 0x5648a1f562dd in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1336
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#23 0x5648a1f55cad in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
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#24 0x5648a318c7c2 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
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#25 0x7f9fe3b5d4a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3)
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previously allocated by thread T5 here:
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#0 0x7f9fe3e34d28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
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#1 0x5648a3291676 in sf_malloc /data/src/10.2/mysys/safemalloc.c:118
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#2 0x5648a326220e in my_malloc /data/src/10.2/mysys/my_malloc.c:101
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#3 0x5648a1df9b06 in String::real_alloc(unsigned long) /data/src/10.2/sql/sql_string.cc:45
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#4 0x5648a1a66fd9 in String::alloc(unsigned long) /data/src/10.2/sql/sql_string.h:357
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#5 0x5648a1dfa14c in String::set_int(long long, bool, charset_info_st const*) /data/src/10.2/sql/sql_string.cc:128
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#6 0x5648a224cd1a in Item_int::val_str(String*) /data/src/10.2/sql/item.cc:3086
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#7 0x5648a2449d9e in Item_char_typecast::val_str(String*) /data/src/10.2/sql/item_timefunc.cc:2505
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#8 0x5648a233b72a in Item_func_min_max::val_str(String*) /data/src/10.2/sql/item_func.cc:2963
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#9 0x5648a2239c5f in Item::temporal_precision(enum_field_types) /data/src/10.2/sql/item.cc:576
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#10 0x5648a2454b0b in Item_temporal_typecast::fix_length_and_dec() /data/src/10.2/sql/item_timefunc.h:1099
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#11 0x5648a231b4c1 in Item_func::fix_fields(THD*, Item**) /data/src/10.2/sql/item_func.cc:229
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#12 0x5648a1b3293c in setup_fields(THD*, Bounds_checked_array<Item*>, List<Item>&, enum_mark_columns, List<Item>*, List<Item>*, bool) /data/src/10.2/sql/sql_base.cc:7186
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#13 0x5648a1cb83f9 in JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*) /data/src/10.2/sql/sql_select.cc:811
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#14 0x5648a1cd5549 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*) /data/src/10.2/sql/sql_select.cc:3796
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#15 0x5648a1cb4aad in handle_select(THD*, LEX*, select_result*, unsigned long) /data/src/10.2/sql/sql_select.cc:361
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#16 0x5648a1c3a2c6 in execute_sqlcom_select /data/src/10.2/sql/sql_parse.cc:6225
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#17 0x5648a1c2861b in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:3532
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#18 0x5648a1c42d48 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:7740
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#19 0x5648a1c1ee06 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1831
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#20 0x5648a1c1be1c in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1384
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#21 0x5648a1f562dd in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1336
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#22 0x5648a1f55cad in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
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#23 0x5648a318c7c2 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
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#24 0x7f9fe3b5d4a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3)
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Thread T5 created by T0 here:
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#0 0x7f9fe3da3f59 in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x30f59)
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#1 0x5648a318cbfe in spawn_thread_v1 /data/src/10.2/storage/perfschema/pfs.cc:1912
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#2 0x5648a1a246b2 in inline_mysql_thread_create /data/src/10.2/include/mysql/psi/mysql_thread.h:1239
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#3 0x5648a1a38cac in create_thread_to_handle_connection(CONNECT*) /data/src/10.2/sql/mysqld.cc:6506
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#4 0x5648a1a3938f in create_new_thread /data/src/10.2/sql/mysqld.cc:6576
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#5 0x5648a1a3a3a7 in handle_connections_sockets() /data/src/10.2/sql/mysqld.cc:6851
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#6 0x5648a1a38217 in mysqld_main(int, char**) /data/src/10.2/sql/mysqld.cc:6125
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#7 0x5648a1a2303f in main /data/src/10.2/sql/main.cc:25
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#8 0x7f9fe1fdc2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
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SUMMARY: AddressSanitizer: heap-use-after-free /data/src/10.2/strings/ctype-simple.c:182 in my_strnncollsp_simple
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Shadow bytes around the buggy address:
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0x0c1a7fffe2c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c1a7fffe2d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c1a7fffe2e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c1a7fffe2f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c1a7fffe300: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fd fd
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=>0x0c1a7fffe310: fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd fd fd
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0x0c1a7fffe320: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
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0x0c1a7fffe330: fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa
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0x0c1a7fffe340: fa fa fd fd fd fd fd fd fd fd fd fd fd fd fd fd
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0x0c1a7fffe350: fd fd fd fd fa fa fa fa fa fa fa fa fd fd fd fd
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0x0c1a7fffe360: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa fa
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Shadow byte legend (one shadow byte represents 8 application bytes):
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Addressable: 00
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Partially addressable: 01 02 03 04 05 06 07
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Heap left redzone: fa
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Heap right redzone: fb
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Freed heap region: fd
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Stack left redzone: f1
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Stack mid redzone: f2
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Stack right redzone: f3
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Stack partial redzone: f4
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Stack after return: f5
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Stack use after scope: f8
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Global redzone: f9
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Global init order: f6
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Poisoned by user: f7
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Container overflow: fc
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Array cookie: ac
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Intra object redzone: bb
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ASan internal: fe
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Left alloca redzone: ca
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Right alloca redzone: cb
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==14630==ABORTING
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