GitHub Advisoryadvisory · crates.io

GHSA-pv9v-5j35-xwcr libcrux Panics During Standalone MAC Operations

HIGH Published 2026-03-26 Modified 2026-03-26 Official page ↗
Ecosystem
crates.io
Packages
libcrux-poly1305
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
CWE-125, CWE-805
Reviewed
2026-03-26

Affected packages

• crates.io libcrux-poly1305: < 0.0.5 → fixed in 0.0.5

Description

An incorrect constant for the key length in libcrux-poly1305 caused the standalone MAC function `libcrux_poly1305::mac` to always panic with an out-of-bounds memory access. Impact Applications wishing to use libcrux-poly1305 as a standalone MAC would experience panics. The use of libcrux-poly1305 in libcrux-chacha20poly1305 is unaffected. Mitigation Starting from version `0.0.5`, the correct value is used for the key length constant.

Related

Weakness · CWE (2)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-805 Buffer Access with Incorrect Length Value weakness

References