Stream: wasmtime

Topic: Recent fuzz failures and helping to mitigate


view this post on Zulip Alex Crichton (Aug 18 2026 at 15:56):

We're starting to get quite the backlog of fuzz failures in oss-fuzz and while I've historically been the one to address things I've been pretty busy recently and won't have a chance to look at these failures for a bit. Would someone else be willing to volunteer to help fix these failures? So far I'm not seeing anything that's like CVE-worthy it's moreso that the fuzzers are all going to be tripping over these preexisting failures and will be unable to make any progress unless we fix these

view this post on Zulip Alex Crichton (Aug 18 2026 at 15:57):

Examples are:

https://oss-fuzz.com/testcase-detail/5408661569339392
https://oss-fuzz.com/testcase-detail/6602652377743360
https://oss-fuzz.com/testcase-detail/4690035493109760

view this post on Zulip fitzgen (he/him) (Aug 19 2026 at 14:46):

I can take a look

view this post on Zulip Adam Bratschi-Kaye (he) (Aug 19 2026 at 18:36):

The second two are the issue where we consume fuel on a bulk operation even if it is OOB. Made a new issue for it.


Last updated: Aug 30 2026 at 09:07 UTC