aflplusplus/libafl · Security
libafl has unsound usages of `core::slice::from_raw_parts_mut`
- GHSA ID
- GHSA-f7qj-v3vp-4856
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Description
The library breaks the safety assumptions when using unsafe API slice::from_raw_parts_mut. The pointer passed to from_raw_parts_mut is misaligned by casting u8 to u16 raw pointer directly, which is unsound. The bug is patched by using align_offset, which could make sure the memory address is aligned to 2 bytes for u16.
This was patched in 0.11.2 in the commit.
References
- https://github.com/AFLplusplus/LibAFL/issues/1526 ↗
- https://github.com/AFLplusplus/LibAFL/pull/1530 ↗
- https://github.com/AFLplusplus/LibAFL/pull/1530/commits/5a60cb31ef587d71d09d534bba39bd3973c4b35d ↗
- https://github.com/AFLplusplus/LibAFL/commit/f70a16a09a8096d3c50159dd8a912a75c2af157c ↗
- https://rustsec.org/advisories/RUSTSEC-2024-0424.html ↗
- https://github.com/advisories/GHSA-f7qj-v3vp-4856 ↗