OSS-Fuzz issue 40999

[oss-fuzz-robot]

OSS-Fuzz has found a bug in this project. Please see https://oss-fuzz.com/testcase?key=5741446309740544 for details and reproducers.

This issue is mirrored from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40999 and will auto-close if the status changes there.

If you have trouble accessing this report, please file an issue at https://github.com/google/oss-fuzz/issues/new.

[Marcono1234]

Exception handling in com.google.gson.JsonStreamParser.next() seems to be questionable. This bug occurs because it treats a JsonParseException with EOFException as cause as if no element existed and throws a NoSuchElementException (even though hasNext() returned true before).

Simple reproducer based on the fuzzer data:

JsonStreamParser parser = new JsonStreamParser("[");
assertTrue(parser.hasNext());
// Throws NoSuchElementException
parser.next();

[oss-fuzz-robot]

OSS-Fuzz has closed this bug. Please see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40999 for details.

[Marcono1234]

Reopening this because the code causing this was not fixed as far as I know, so it appears this issue was closed erroneously, see also https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40999#c6.

[oss-fuzz-robot]

OSS-Fuzz has closed this bug. Please see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40999 for details.