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CVE-2025-39702
ipv6: sr: Fix MAC comparison to be constant-time
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.

INFO

Published Date :

Sept. 5, 2025, 6:15 p.m.

Last Modified :

Sept. 5, 2025, 6:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-39702 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Update the Linux kernel to apply constant-time MAC comparison fixes.
  • Update the Linux kernel to the latest version.
  • Apply the provided patch set.
  • Recompile the kernel with the fix.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-39702.

URL Resource
https://git.kernel.org/stable/c/3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0
https://git.kernel.org/stable/c/3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3
https://git.kernel.org/stable/c/86b6d34717fe0570afce07ee79b8eeb40341f831
https://git.kernel.org/stable/c/a458b2902115b26a25d67393b12ddd57d1216aaa
https://git.kernel.org/stable/c/b3967c493799e63f648e9c7b6cb063aa2aed04e7
https://git.kernel.org/stable/c/f7878d47560d61e3f370aca3cebb8f42a55b990a
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-39702 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-39702 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-39702 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-39702 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 05, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://git.kernel.org/stable/c/3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0
    Added Reference https://git.kernel.org/stable/c/3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3
    Added Reference https://git.kernel.org/stable/c/86b6d34717fe0570afce07ee79b8eeb40341f831
    Added Reference https://git.kernel.org/stable/c/a458b2902115b26a25d67393b12ddd57d1216aaa
    Added Reference https://git.kernel.org/stable/c/b3967c493799e63f648e9c7b6cb063aa2aed04e7
    Added Reference https://git.kernel.org/stable/c/f7878d47560d61e3f370aca3cebb8f42a55b990a
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.