{"id":"OSV-2026-603","summary":"UNKNOWN READ in \u003cwasmtime::runtime::func::Func\u003e::call_unchecked_raw::\u003c","details":"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","modified":"2026-04-21T00:05:37.586785Z","published":"2026-04-21T00:05:37.586369Z","references":[{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504268343"}],"affected":[{"package":{"name":"wasmtime","ecosystem":"OSS-Fuzz","purl":"pkg:generic/wasmtime"},"ranges":[{"type":"GIT","repo":"https://github.com/bytecodealliance/wasmtime","events":[{"introduced":"d3f444c876d71724dca6b40a58a55e8a450a7967"},{"fixed":"eb7a3f61290ac9e82fe7d760fb569bb3f3fc657a"}]}],"ecosystem_specific":{"severity":"MEDIUM"},"database_specific":{"source":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wasmtime/OSV-2026-603.yaml","fixed_range":"3250c98a2d60f87897d29ff3547ec5463ff245c4:eb7a3f61290ac9e82fe7d760fb569bb3f3fc657a","introduced_range":"40da1d8c83e2c5e35ab5245ff4b7a5a9592422c1:d5f1b973e48b0016a2cd1190985c9fa509bf0cee"}}],"schema_version":"1.7.5"}