PT-2026-99976

rustls-webpki through 0.103.12 and 0.104.0-alpha releases before 0.104.0-alpha.7 contains a reachable panic in bit string flags in src/der.rs. The input guard fails to reject a named-bit BIT STRING whose content is exactly 0x00 zero padding bits and no data bytes, so raw bits.len - 1 underflows o...