CVE-2025-39702

HIGH EPSS 4.5%
Published Sep 5, 20259mo ago · Modified Jun 17, 20261w ago
7.0 CVSS 3.1
High
Find Similar
Published Sep 5, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-203

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥4.10  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.44
linuxlinux_kernel*≥6.13  –  <6.16.4
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
debiandebian_linux11.0any

References 9

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86b6d34717fe0570afce07ee79b8eeb40341f831
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a458b2902115b26a25d67393b12ddd57d1216aaa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b3967c493799e63f648e9c7b6cb063aa2aed04e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7878d47560d61e3f370aca3cebb8f42a55b990a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff55a452d56490047f5233cc48c5d933f8586884
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86b6d34717fe0570afce07ee79b8eeb40341f831
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a458b2902115b26a25d67393b12ddd57d1216aaa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b3967c493799e63f648e9c7b6cb063aa2aed04e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7878d47560d61e3f370aca3cebb8f42a55b990a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff55a452d56490047f5233cc48c5d933f8586884
    Patch