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Closed

fuboat opened this issue

Apr 12, 2023

· 1 comment

Closed

virtuoso 7.2.9 crashed at dfe_qexp_list #1125

fuboat opened this issue

Apr 12, 2023

· 1 comment

Comments

The PoC is generated by my DBMS fuzzer.

CREATE TABLE t1 ( x VARCHAR, y VARCHAR );

SELECT IFNULL(MIN(x), -1), IFNULL(MAX(x), -1) FROM ( SELECT x FROM t1 UNION ALL SELECT NULL ) AS temp;

backtrace:

#0 0x737010 (dfe_qexp_list+0x40) #1 0x73711d (dfe_qexp_list+0x14d) #2 0x7474c9 (dfe_union_dfe+0xc9) #3 0x747878 (sqlg_set_ts_order+0x198) #4 0x747efd (sqlg_top_1+0xed) #5 0x70d4d4 (sqlo_top_select+0x164) #6 0x6b72bf (sql_stmt_comp+0x8bf) #7 0x6ba122 (sql_compile_1+0x1a62) #8 0x7c8cd0 (stmt_set_query+0x340) #9 0x7cabc2 (sf_sql_execute+0x922) #10 0x7cbf4e (sf_sql_execute_w+0x17e) #11 0x7d4c0d (sf_sql_execute_wrapper+0x3d) #12 0xe1f01c (future_wrapper+0x3fc) #13 0xe2691e (_thread_boot+0x11e) #14 0x7f460b246609 (start_thread+0xd9) #15 0x7f460b016133 (clone+0x43)

ways to reproduce (write poc to the file ‘/tmp/test.sql’ first):

remove the old one

docker container rm virtdb_test -f

start virtuoso through docker

docker run --name virtdb_test -itd --env DBA_PASSWORD=dba openlink/virtuoso-opensource-7:7.2.9

wait the server starting

sleep 10

check whether the simple query works

echo “SELECT 1;” | docker exec -i virtdb_test isql 1111 dba

run the poc

docker exec -i virtdb_test isql 1111 dba < “/tmp/test.sql”

This crash has been fixed by some of the patches we committed recently.

2 participants