CVE-2026-43384
net/tcp-ao: Fix MAC comparison to be constant-time
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
08 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →