CVE-2025-40204
sctp: Fix MAC comparison to be constant-time
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
12 Nov 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0b32ff285ff6f6f1ac1d9495787ccce8837d6405https://git.kernel.org/stable/c/0e8b8c326c2a6de4d837b1bb034ea704f4690d77https://git.kernel.org/stable/c/1cd60e0d0fb8f0e62ec4499138afce6342dc9d4chttps://git.kernel.org/stable/c/8019b3699289fce3f10b63f98601db97b8d105b0https://git.kernel.org/stable/c/9c05d44ec24126fc283835b68f82dba3ae985209https://git.kernel.org/stable/c/b93fa8dc521d00d2d44bf034fb90e0d79b036617https://git.kernel.org/stable/c/dd91c79e4f58fbe2898dac84858033700e0e99fbhttps://git.kernel.org/stable/c/ed3044b9c810c5c24eb2830053fbfe5fd134c5d4