`serde` deserialization for `FamStructWrapper` lacks bound checks that could potentially lead to out-of-bounds memory access

## Impact An issue was discovered in the `FamStructWrapper::deserialize` implementation provided by the crate for `vmm_sys_util::fam::FamStructWrapper`, which can lead to out of bounds memory accesses. The deserialization does not check that the length stored in the header matches the flexible array length. Mismatch in the lengths might allow out of bounds memory access through Rust-safe methods. Impacted versions: >= 0.5.0 ## Patches The issue was corrected in version 0.12.0 by inserting a check that verifies the lengths of compared flexible arrays are equal for any deserialized header and aborting deserialization otherwise. Moreover, the API was changed so that header length can only be modified through Rust-unsafe code. This ensures that users cannot trigger out-of-bounds memory access from Rust-safe code.

Source published

2 Jan 2024 12:00:00 UTC

Source modified

12 Oct 2026 18:00:06 UTC

Observed here

24 Oct 2026 13:19:54 UTC

Source terms

OSV · upstream source license applies

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CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L