AZL-93653
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-93653.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-93653
- Upstream
- Published
- 2026-07-25T10:17:12Z
- Modified
- 2026-08-28T17:47:48.405202984Z
- Summary
- CVE-2026-64313 affecting package kernel for versions less than 6.6.145.2-1
- Details
-
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.mhigh < product.mhigh) doesn't handle the case where r01.mhigh == product.mhigh 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 mul6464() and add128128() helpers. It seems the check got lost in translation.
Add proper handling for this boundary by accounting for the carry from the lower addition.
- References