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Improved bounds and return value checking (oss-fuzz/29329)

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This commit is contained in:
Evan Miller
2021-01-07 19:59:45 -05:00
parent 9b5e591905
commit c31daeb2c4
7 changed files with 59 additions and 17 deletions
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14
src/sql/mdbsql.c
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@@ -696,7 +696,12 @@ void mdb_sql_describe_table(MdbSQL *sql)
return;
}
mdb_read_columns(table);
if (!mdb_read_columns(table)) {
mdb_sql_error(sql, "Could not read columns of table %s", sql_tab->name);
/* the column and table names are no good now */
mdb_sql_reset(sql);
return;
}
ttable = mdb_create_temp_table(mdb, "#describe");
@@ -794,7 +799,12 @@ int found = 0;
mdb_sql_reset(sql);
return;
}
mdb_read_columns(table);
if (!mdb_read_columns(table)) {
mdb_sql_error(sql, "Could not read columns of table %s", sql_tab->name);
/* the column and table names are no good now */
mdb_sql_reset(sql);
return;
}
if (sql->sel_count && !sql->sarg_tree) {
MdbTableDef *ttable = mdb_create_temp_table(mdb, "#count");