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MDEV-18626 ASAN stack-buffer-overflow in int10_to_str / make_date_time upon DATE_FORMAT

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This commit is contained in:
Alexander Barkov 2019-03-14 14:40:33 +04:00
parent 49c49e630b
commit ddfa722a03
3 changed files with 14 additions and 1 deletions
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6
mysql-test/r/func_time.result
View File

@ -3444,5 +3444,11 @@ foo
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: '2012-12-12 12:12:12'
#
# MDEV-18626 ASAN stack-buffer-overflow in int10_to_str / make_date_time upon DATE_FORMAT
#
SELECT DATE_FORMAT(100000000000, '%j');
DATE_FORMAT(100000000000, '%j')
NULL
#
# End of 10.1 tests
#

7
mysql-test/t/func_time.test
View File

@ -1929,6 +1929,13 @@ DROP TABLE t1;
SELECT NULLIF('foo', FROM_UNIXTIME('2012-12-12 12:12:12', TRIM(0)));
--echo #
--echo # MDEV-18626 ASAN stack-buffer-overflow in int10_to_str / make_date_time upon DATE_FORMAT
--echo #
SELECT DATE_FORMAT(100000000000, '%j');
--echo #
--echo # End of 10.1 tests
--echo #

2
sql/item_timefunc.cc
View File

@ -577,7 +577,7 @@ static bool make_date_time(const LEX_CSTRING &format, MYSQL_TIME *l_time,
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'j':
if (type == MYSQL_TIMESTAMP_TIME)
if (type == MYSQL_TIMESTAMP_TIME || !l_time->month || !l_time->year)
return 1;
length= (uint) (int10_to_str(calc_daynr(l_time->year,l_time->month,
l_time->day) -