CVE-2026-43384

critical

Description

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: 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.

References

https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c

https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125

https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc

https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe

Details

Source: Mitre, NVD

Published: 2026-05-08

Updated: 2026-05-12

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H