CVEvulnerability
CVE-2026-43383
9.4 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-05-08
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.4 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
- Weaknesses
- CWE-208
Description
In the Linux kernel, the following vulnerability has been resolved:
net/tcp-md5: 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 configurations
• linux linux kernel (>= 2.6.20 < 5.10.253)
• linux linux kernel (>= 5.11 < 6.1.167)
• linux linux kernel (>= 6.2 < 6.6.130)
• linux linux kernel (>= 6.7 < 6.12.78)
• linux linux kernel (>= 6.13 < 6.18.19)
• linux linux kernel (>= 6.19 < 6.19.9)
• linux linux kernel 7.0
Related
Weakness · CWE (1)
- CWE-208 Observable Timing Discrepancy weakness
References
- https://git.kernel.org/stable/c/02669e2a4d207068edce7e8b5fafd85822018ce6 Patch
- https://git.kernel.org/stable/c/345a9530756528d7ca407663d659c3c40e75c3dd Patch
- https://git.kernel.org/stable/c/46d0d6f50dab706637f4c18a470aac20a21900d3 Patch
- https://git.kernel.org/stable/c/5d305a95130a8d08b9545e47f1e18d29d59866cb Patch
- https://git.kernel.org/stable/c/821c8751fdeecdeecabeb11704dd33439c9e4bbc Patch
- https://git.kernel.org/stable/c/ae3831b44f477de048287493e184fc3ff913b624 Patch
- https://git.kernel.org/stable/c/b502e97e29d791ff7a8051f29a414535739be218 Patch
- https://git.kernel.org/stable/c/ff44ec94d4fc8348600a69de0a8fa1102c23bce8 git.kernel.org