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MDEV-32376 SHOW CREATE DATABASE statement crashes the server when db name contains some unicode characters, ASAN stack-buffer-overflow

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Adding the test for the length of lex->name into show_create_db().

Without this test writes beyond the end of db_name_buff were possible
upon a too long database name.
This commit is contained in:
Alexander Barkov
2024-06-10 09:31:14 +04:00
parent bf0aa99aeb
commit 21f56583bf
3 changed files with 33 additions and 0 deletions
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7
mysql-test/main/create.result
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@ -2061,4 +2061,11 @@ DROP TABLE t1;
#
CREATE TABLE t1 (id1 INT, id2 INT, primary key (id1), unique index (id2) visible);
drop table t1;
#
# MDEV-32376 SHOW CREATE DATABASE statement crashes the server when db name contains some unicode characters, ASAN stack-buffer-overflow
#
SET NAMES utf8mb3;
SHOW CREATE DATABASE `#testone#￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭`;
ERROR 42000: Incorrect database name '#testone#￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭...'
SET NAMES DEFAULT;
# End of 10.5 Test