CVE-2026-43383
9.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < 821c8751fdeecdeecabeb11704dd33439c9e4bbc | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < ff44ec94d4fc8348600a69de0a8fa1102c23bce8 | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < 345a9530756528d7ca407663d659c3c40e75c3dd | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < 5d305a95130a8d08b9545e47f1e18d29d59866cb | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < 02669e2a4d207068edce7e8b5fafd85822018ce6 | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < ae3831b44f477de048287493e184fc3ff913b624 | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < b502e97e29d791ff7a8051f29a414535739be218 | affected |
| Linux | Linux | cfb6eeb4c860592edd123fdea908d23c6ad1c7dc < 46d0d6f50dab706637f4c18a470aac20a21900d3 | affected |
| Linux | Linux | 2.6.20 | affected |
| Linux | Linux | 0 < 2.6.20 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.210 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.78 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.19 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.9 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/821c8751fdeecdeecabeb11704dd33439c9e4bbc
- https://git.kernel.org/stable/c/ff44ec94d4fc8348600a69de0a8fa1102c23bce8
- https://git.kernel.org/stable/c/345a9530756528d7ca407663d659c3c40e75c3dd
- https://git.kernel.org/stable/c/5d305a95130a8d08b9545e47f1e18d29d59866cb
- https://git.kernel.org/stable/c/02669e2a4d207068edce7e8b5fafd85822018ce6
- https://git.kernel.org/stable/c/ae3831b44f477de048287493e184fc3ff913b624
- https://git.kernel.org/stable/c/b502e97e29d791ff7a8051f29a414535739be218
- https://git.kernel.org/stable/c/46d0d6f50dab706637f4c18a470aac20a21900d3
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