x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8804
