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report unsound issue in bcc #2042

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report unsound issue in bcc #2042

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fc79cff
report unsound issue in bcc
llooFlashooll Aug 21, 2024
84ae911
Merge branch 'rustsec:main' into bcc
llooFlashooll Sep 4, 2024
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20 changes: 20 additions & 0 deletions crates/bcc/RUSTSEC-0000-0000.md
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "bcc"
date = "2024-08-21"
url = "https://github.com/rust-bpf/rust-bcc/issues/200"
#informational = "unmaintained"
categories = ["memory-corruption"]
keywords = ["misalignment"]

[versions]
patched = []
```

# Unsound usage of unsafe implementation from `Vec<u8>` to `T`

Unsafe misaligned conversion found at function `null_or_mut_ptr`. The pointer to 'Vec<u8>' is converted to a struct `T`. This unsound implementation would create a misalignment issues if the type size of `Vec<u8>` is smaller than the type size of struct `T`.
If we further manipulate the problematic converted types, it would potentially lead to different undefined behavior such as access out-of-bound.

In the meantime, bcc will no longer be maintained. Users are encouraged to migrate to libbpf-rs.