CVE-2026-50185

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.

CVSS

No CVSS.

References

Link	Resource
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://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24

Configurations

No configuration.

History

20 Jul 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24 -~~	() https://github.com/RustCrypto/utils/security/advisories/GHSA-3rjw-m598-pq24 -

17 Jul 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 19:17

Updated : 2026-07-20 20:16

NVD link : CVE-2026-50185

Mitre link : CVE-2026-50185

CVE.ORG link : CVE-2026-50185

JSON object : View

Products Affected

No product.

CWE

CWE-758

Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

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