CVE-2025-39702

HighCVSS 7.0/10Last modified Oct 19, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ipv6: sr: Fix MAC comparison to be constant-time

To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-203

Affected software

VendorProductVersions
LinuxLinux>= bf355b8d2c30a289232042cacc1cfaea4923936c, < ff55a452d56490047f5233cc48c5d933f8586884; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < 3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < 86b6d34717fe0570afce07ee79b8eeb40341f831; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < 3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < b3967c493799e63f648e9c7b6cb063aa2aed04e7; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < f7878d47560d61e3f370aca3cebb8f42a55b990a; >= bf355b8d2c30a289232042cacc1cfaea4923936c, < a458b2902115b26a25d67393b12ddd57d1216aaa
LinuxLinux4.10
SiemensSIMATIC CN 4100< V5.0

References

Timeline

Published
Sep 5, 2025
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2025-39702: High severity, CVSS 7.0 | Vulnix