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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64313 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: ecc - Fix carry overflow in vli multiplication The carry flag calculation fails when r01.m_high is saturated (0xFFFFFFFFFFFFFFFF) and addition of lower bits overflows. The condition (r01.m_high < product.m_high) doesn't handle the case where r01.m_high == product.m_high and an additional carry exists from lower-bit overflow. When commit 3c4b23901a0c ("crypto: ecdh - Add ECDH software support") introduced crypto/ecc.c, it split the muladd() function in the micro-ecc library into separate mul_64_64() and add_128_128() helpers. It seems the check got lost in translation. Add proper handling for this boundary by accounting for the carry from the lower addition.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/24a54dfa06d09813b4802a374fad3d2c0e16a884 kernel.org
https://git.kernel.org/stable/c/27b536a2ec8e2f85a0380c2d13c9ecbc7aaab406 kernel.org
https://git.kernel.org/stable/c/5275e0fca256d081e2e7d4ba3dd8216c6e50d44e kernel.org
https://git.kernel.org/stable/c/677450e5ef850c4d28b7956aa01104548c2a894e kernel.org
https://git.kernel.org/stable/c/774ddddf5eb26eeca177350413e3e2bc50930ee9 kernel.org
https://git.kernel.org/stable/c/b709e0e768766abe29a49e1c1922a1604be602f4 kernel.org
https://git.kernel.org/stable/c/d11b2bb99bec1f5557c01cac42231e23745f49b8 kernel.org
https://git.kernel.org/stable/c/ebaae7c4251cc0cdb2602f334d4f08a3e82d271e kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64313
NVD Published Date:
07/25/2026
NVD Last Modified:
07/25/2026
Source:
kernel.org