CVE catalog
CVE-2026-50185
DEBIAN-CVE-2026-50185
- Severity
- Low · CVSS 3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.16% · Oct 25, 2026
RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are zero-extended when loading values smaller than a register, so set high bits such as [8..] in a Cmov selector or [16..] of self or other in the u16 and i16 CmovEq implementations can cause left.cmovz(&right, condition) to produce incorrect output. This issue is fixed in version 0.5.4.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rust-cmov | 14 | 0.5.3-1 | vulnerable |
| Debian | rust-cmov | 14 | 0.5.4-1 | fixed |
| Cpe | cmov | Not reported | 0.5.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rust-cmov | deb | 14 | 0.5.4-1 | Not reported | DEBIAN-CVE-2026-50185 | Not reported |
| Cpe | cmov | cpe | Not reported | 0.5.4 | Not reported | NVD-CVE-2026-50185 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/RustCrypto/utils/commit/dba6c355c9f241e3726d5ec2a68f9f3b519f6063]
- [https://github.com/RustCrypto/utils/releases/tag/cmov-v0.5.4]
- [https://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-50185]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-50185]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50185.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]