{"id":"OSV-2026-603","aliases":[],"status":"published","title":"UNKNOWN READ in \u003cwasmtime::runtime::func::Func\u003e::call_unchecked_raw::\u003c","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504268343\n\n```\nCrash type: UNKNOWN READ\nCrash state:\n\u003cwasmtime::runtime::func::Func\u003e::call_unchecked_raw::\u003c\n\u003cwasmtime::runtime::func::Func\u003e::call_impl_do_call::\u003c\nwasmtime_internal_fiber::stackswitch::x86_64::wasmtime_fiber_start\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-04-21T00:05:37.586369Z","modified":"2026-04-21T00:05:37Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"wasmtime","ranges":[{"type":"GIT","events":[{"introduced":"d3f444c876d71724dca6b40a58a55e8a450a7967"},{"fixed":"eb7a3f61290ac9e82fe7d760fb569bb3f3fc657a"}]}]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504268343","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-603","title":"UNKNOWN READ in \u003cwasmtime::runtime::func::Func\u003e::call_unchecked_raw::\u003c","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504268343\n\n```\nCrash type: UNKNOWN READ\nCrash state:\n\u003cwasmtime::runtime::func::Func\u003e::call_unchecked_raw::\u003c\n\u003cwasmtime::runtime::func::Func\u003e::call_impl_do_call::\u003c\nwasmtime_internal_fiber::stackswitch::x86_64::wasmtime_fiber_start\n```\n","status":"published","published":"2026-04-21T00:05:37.586369Z","modified":"2026-04-21T00:05:37.586785Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}