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CVE-2026-43383
Published: May 8, 2026
Modified: May 11, 2026
PUBLISHED
CVSS v3.1
9.4
CRITICAL
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected cfb6eeb4c860592edd123fdea908d23c6ad1c7dc - < 821c8751fdeecdeecabeb11704dd33439c9e4bbcaffected cfb6eeb4c860592edd123fdea908d23c6ad1c7dc - < 345a9530756528d7ca407663d659c3c40e75c3ddaffected cfb6eeb4c860592edd123fdea908d23c6ad1c7dc - < 5d305a95130a8d08b9545e47f1e18d29d59866cbaffected cfb6eeb4c860592edd123fdea908d23c6ad1c7dc - < 02669e2a4d207068edce7e8b5fafd85822018ce6affected cfb6eeb4c860592edd123fdea908d23c6ad1c7dc - < ae3831b44f477de048287493e184fc3ff913b624+2 more versions |
Linux | Linux | affected 2.6.20unaffected 0 - < 2.6.20unaffected 5.10.253 - <= 5.10.*unaffected 6.1.167 - <= 6.1.*unaffected 6.6.130 - <= 6.6.*+4 more versions |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High
References
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