by Kastro CVE-2026-43383
Linux Linux — net/tcp-md5: Fix MAC comparison to be constant-time
Description · from the CVE record
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
ProductAffectedFixed inSource
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < 821c8751fdeecdeecabeb11704dd33439c9e4bbc821c8751fdeecdeecabeb11704dd33439c9e4bbcCNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < ff44ec94d4fc8348600a69de0a8fa1102c23bce8ff44ec94d4fc8348600a69de0a8fa1102c23bce8CNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < 345a9530756528d7ca407663d659c3c40e75c3dd345a9530756528d7ca407663d659c3c40e75c3ddCNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < 5d305a95130a8d08b9545e47f1e18d29d59866cb5d305a95130a8d08b9545e47f1e18d29d59866cbCNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < 02669e2a4d207068edce7e8b5fafd85822018ce602669e2a4d207068edce7e8b5fafd85822018ce6CNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < ae3831b44f477de048287493e184fc3ff913b624ae3831b44f477de048287493e184fc3ff913b624CNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < b502e97e29d791ff7a8051f29a414535739be218b502e97e29d791ff7a8051f29a414535739be218CNA
Linuxcfb6eeb4c860592edd123fdea908d23c6ad1c7dc – < 46d0d6f50dab706637f4c18a470aac20a21900d346d0d6f50dab706637f4c18a470aac20a21900d3CNA
Linux2.6.20–CNA
Scores by source
Linux (CNA)9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial