fuzz: Limit parse_univalue input length

MarcoFalke · MarcoFalke · commit fa80b16b20df · 2024-07-19T15:39:02.000+02:00
diff --git a/src/test/fuzz/parse_univalue.cpp b/src/test/fuzz/parse_univalue.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2009-2022 The Bitcoin Core developers
+// Copyright (c) 2009-present The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -77,7 +77,7 @@ FUZZ_TARGET(parse_univalue, .init = initialize_parse_univalue)
     }
     try {
         FlatSigningProvider provider;
-        (void)EvalDescriptorStringOrObject(univalue, provider);
+        if (buffer.size() < 10'000) (void)EvalDescriptorStringOrObject(univalue, provider);
     } catch (const UniValue&) {
     } catch (const std::runtime_error&) {
     }

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-// Copyright (c) 2009-2022 The Bitcoin Core developers`
	`1`	`+// Copyright (c) 2009-present The Bitcoin Core developers`
`2`	`2`	`// Distributed under the MIT software license, see the accompanying`
`3`	`3`	`// file COPYING or http://www.opensource.org/licenses/mit-license.php.`
`4`	`4`
`@@ -77,7 +77,7 @@ FUZZ_TARGET(parse_univalue, .init = initialize_parse_univalue)`
`77`	`77`	`}`
`78`	`78`	`try {`
`79`	`79`	`FlatSigningProvider provider;`
`80`		`- (void)EvalDescriptorStringOrObject(univalue, provider);`
	`80`	`+ if (buffer.size() < 10'000) (void)EvalDescriptorStringOrObject(univalue, provider);`
`81`	`81`	`} catch (const UniValue&) {`
`82`	`82`	`} catch (const std::runtime_error&) {`
`83`	`83`	`}`