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+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "aeron"
+date = "2026-05-02"
+url = "https://github.com/UnitedTraders/aeron-rs/issues/31"
+informational = "unsound"
+categories = ["memory-corruption"]
+keywords = ["out-of-bounds", "segfault"]
+
+[versions]
+patched = []
+```
+
+# Out-of-bounds memory access in `MemoryMappedFile::atomic_buffer()`
+
+`MemoryMappedFile::atomic_buffer()` performs unchecked pointer arithmetic
+without validating that the offset + length fits within the mapped file size.
+Passing an offset far beyond the file size causes a segmentation fault on
+subsequent buffer operations.
+
+This can be triggered through safe public APIs — `atomic_buffer()` is a safe
+method — with no `unsafe` required from the caller.
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