CVE-2025-40204
sctp: Fix MAC comparison to be constant-time
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: 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 :
Nov. 12, 2025, 10:15 p.m.
Last Modified :
Nov. 12, 2025, 10:15 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2025-40204
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.
No affected product recoded yet
Solution
- Update the Linux kernel to include the fix.
- Verify constant-time MAC comparison.
- Ensure proper cryptographic practices are followed.
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-2025-40204.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-40204 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-2025-40204
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-2025-40204 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-40204 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 12, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: sctp: 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/0b32ff285ff6f6f1ac1d9495787ccce8837d6405 Added Reference https://git.kernel.org/stable/c/0e8b8c326c2a6de4d837b1bb034ea704f4690d77 Added Reference https://git.kernel.org/stable/c/1cd60e0d0fb8f0e62ec4499138afce6342dc9d4c Added Reference https://git.kernel.org/stable/c/8019b3699289fce3f10b63f98601db97b8d105b0 Added Reference https://git.kernel.org/stable/c/9c05d44ec24126fc283835b68f82dba3ae985209 Added Reference https://git.kernel.org/stable/c/b93fa8dc521d00d2d44bf034fb90e0d79b036617 Added Reference https://git.kernel.org/stable/c/dd91c79e4f58fbe2898dac84858033700e0e99fb Added Reference https://git.kernel.org/stable/c/ed3044b9c810c5c24eb2830053fbfe5fd134c5d4