CVE-2026-43383

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Source

https://cve.org/CVERecord?id=CVE-2026-43383

Import Source

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2026-43383

Downstream

Published

2026-05-08T14:21:30.704Z

Modified

2026-05-28T03:54:11.402853739Z

Severity

9.4 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H CVSS Calculator

Summary

net/tcp-md5: Fix MAC comparison to be constant-time

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43383.json",
    "cna_assigner": "Linux"
}

References

Affected packages

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc

Fixed

821c8751fdeecdeecabeb11704dd33439c9e4bbc

Fixed

345a9530756528d7ca407663d659c3c40e75c3dd

Fixed

5d305a95130a8d08b9545e47f1e18d29d59866cb

Fixed

02669e2a4d207068edce7e8b5fafd85822018ce6

Fixed

ae3831b44f477de048287493e184fc3ff913b624

Fixed

b502e97e29d791ff7a8051f29a414535739be218

Fixed

46d0d6f50dab706637f4c18a470aac20a21900d3

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43383.json"

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43383.json"