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High 8.1Published Nov 12, 2025
CVE-2025-40204sctp: Fix MAC comparison to be constant-time
Updated under an hour ago ()
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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.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b93fa8dc521d00d2d44bf034fb90e0d79b036617; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 0e8b8c326c2a6de4d837b1bb034ea704f4690d77; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 1cd60e0d0fb8f0e62ec4499138afce6342dc9d4c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9c05d44ec24126fc283835b68f82dba3ae985209; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ed3044b9c810c5c24eb2830053fbfe5fd134c5d4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8019b3699289fce3f10b63f98601db97b8d105b0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 0b32ff285ff6f6f1ac1d9495787ccce8837d6405; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before dd91c79e4f58fbe2898dac84858033700e0e99fb | CNA record |
References
- https://git.kernel.org/stable/c/b93fa8dc521d00d2d44bf034fb90e0d79b036617
- https://git.kernel.org/stable/c/0e8b8c326c2a6de4d837b1bb034ea704f4690d77
- https://git.kernel.org/stable/c/1cd60e0d0fb8f0e62ec4499138afce6342dc9d4c
- https://git.kernel.org/stable/c/9c05d44ec24126fc283835b68f82dba3ae985209
- https://git.kernel.org/stable/c/ed3044b9c810c5c24eb2830053fbfe5fd134c5d4
- https://git.kernel.org/stable/c/8019b3699289fce3f10b63f98601db97b8d105b0
- https://git.kernel.org/stable/c/0b32ff285ff6f6f1ac1d9495787ccce8837d6405
- https://git.kernel.org/stable/c/dd91c79e4f58fbe2898dac84858033700e0e99fb
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.