PT-2026-39045 · Linux+2 · Linux Kernel+2
CVE-2026-43384
·
Published
2026-03-12
·
Updated
2026-08-19
CVSS v2.0
10
Critical
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A timing attack issue exists in the TCP Authentication Option (TCP-AO) implementation. The Message Authentication Code (MAC) comparison was not performed in constant-time, which could allow an attacker to deduce information based on the time taken to validate the MAC.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Insufficient Session Expiration
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu