crates.io/cmov CVE-2026-23519: critical 9.8, EPSS 0.56%

RustCrypto Utilities cmov: `thumbv6m-none-eabi` compiler emits non-constant time assembly when using `cmovnz`

Action: Upgrade cmov to 0.4.4 or later.

cargo update -p cmov --precise 0.4.4

Affected

Fixed versions

Sources

• osv: GHSA-2gqc-6j2q-83qp
• nvd: CVE-2026-23519
• https://github.com/RustCrypto/utils/security/advisories/GHSA-2gqc-6j2q-83qp
• https://github.com/RustCrypto/utils/commit/55977257e7c82a309d5e8abfdd380a774f0f9778
• https://github.com/RustCrypto/utils
• https://rustsec.org/advisories/RUSTSEC-2026-0003.html

CVE-2026-23519 · published 2026-01-15T18:17:15Z · modified 2026-09-10T03:50:32.352645465Z · JSON