Security Bulletin: Denial-of-Service Vulnerability in WebAssembly Micro Runtime (WAMR) LLVM-JIT Mode (≤ v2.4.1) affects watsonx.data

Summary A vulnerability in WebAssembly Micro Runtime WAMR prior to v2.4.2 causes the runtime to hang or crash when executing WebAssembly programs with memory.fill instructions targeting addresses ≥ 2 GiB in LLVM-JIT mode. This can affect watsonx.data. Vulnerability Details CVEID:CVE-2025-58749...

wamr:wamr_fuzz_llvm_jit: Null-dereference READ in wasm_runtime_invoke_native

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=4776431766011904 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Null-dereference READ Crash...

wamr:wamr_fuzz_llvm_jit: Null-dereference READ in execute_post_instantiate_functions

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=4578967146528768 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Null-dereference READ Crash...

wamr:wamr_fuzz_llvm_jit: Null-dereference READ in wasm_runtime_invoke_native

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=4554314369794048 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Null-dereference READ Crash...

wamr:wamr_fuzz_llvm_jit: Null-dereference READ in os_thread_wrapper

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=5568564682883072 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Null-dereference READ Crash...

Untrusted Pointer Dereference

Overview Affected versions of this package are vulnerable to Untrusted Pointer Dereference in the memory.fill process when the first operand memory address pointer is greater than or equal to 2147483648 bytes in LLVM-JIT mode. An attacker can cause the runtime to hang or crash by executing a...

AZL-67617 CVE-2025-58749 affecting package fluent-bit for versions less than 3.0.6-4

WebAssembly Micro Runtime WAMR is a lightweight standalone WebAssembly Wasm runtime. In WAMR versions prior to 2.4.2, when running in LLVM-JIT mode, the runtime cannot exit normally when executing WebAssembly programs containing a memory.fill instruction where the first operand memory address...

CVE-2025-58749

WebAssembly Micro Runtime WAMR is a lightweight standalone WebAssembly Wasm runtime. In WAMR versions prior to 2.4.2, when running in LLVM-JIT mode, the runtime cannot exit normally when executing WebAssembly programs containing a memory.fill instruction where the first operand memory address...

CVE-2025-58749

CVE-2025-58749 affects WebAssembly Micro Runtime (WAMR) prior to version 2.4.2. In LLVM-JIT mode, WebAssembly programs containing a memory.fill instruction with the first operand (memory address pointer) >= 2 GiB could cause the runtime to hang (release builds) or crash (debug builds) due to i...

CVE-2025-58749: Untrusted Pointer Dereference

WebAssembly Micro Runtime WAMR is a lightweight standalone WebAssembly Wasm runtime. In WAMR versions prior to 2.4.2, when running in LLVM-JIT mode, the runtime cannot exit normally when executing WebAssembly programs containing a memory.fill instruction where the first operand memory address...

wamr:wamr_fuzz_llvm_jit: Heap-buffer-overflow in load_global_import

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=5378070527934464 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 8 Cras...

wamr:wamr_fuzz_llvm_jit: Heap-buffer-overflow in load_from_sections

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=6748122586087424 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzllvmjit Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash...