Bug 2414718 (CVE-2025-40204) - CVE-2025-40204 kernel: sctp: Fix MAC comparison to be constant-time
Summary: CVE-2025-40204 kernel: sctp: Fix MAC comparison to be constant-time
Keywords:
Status: NEW
Alias: CVE-2025-40204
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-11-12 23:02 UTC by OSIDB Bzimport
Modified: 2025-11-13 09:41 UTC (History)
0 users

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Description OSIDB Bzimport 2025-11-12 23:02:25 UTC 
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.
Comment 1 Mauro Matteo Cascella 2025-11-13 09:37:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025111247-CVE-2025-40204-0f06@gregkh/T
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