Bug 2442371 (CVE-2026-1229)

Summary: CVE-2026-1229 github.com/cloudflare/circl/ecc/p384: CIRCL ecc/p384: Incorrect cryptographic calculations via specific inputs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A flaw was found in the `github.com/cloudflare/circl/ecc/p384` package. The `CombinedMult` function, which is part of the elliptic curve cryptography (ECC) implementation for the `secp384r1` curve, generates an incorrect value when provided with specific inputs. This can lead to incorrect cryptographic calculations. However, it is important to note that ECDH (Elliptic Curve Diffie-Hellman) and ECDSA (Elliptic Curve Digital Signature Algorithm) signing operations that utilize this curve are not impacted by this vulnerability.
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Bug Depends On: 2442406, 2442402, 2442404, 2442405    
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Description OSIDB Bzimport 2026-02-24 16:03:28 UTC 
The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas.
ECDH and ECDSA signing relying on this curve are not affected.

The bug was fixed in  v1.6.3 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .