Information Exposure Affecting kernel-livepatch-6.18.20-20.229 package, versions <1:1.0-0.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.46% (37th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIVEPATCH6182020229-16735598
  • published18 May 2026
  • disclosed8 May 2026

Introduced: 8 May 2026

CVE-2026-43384  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-livepatch-6.18.20-20.229 to version 1:1.0-0.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1596.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6.18.20-20.229 package and not the kernel-livepatch-6.18.20-20.229 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Base Scores

version 3.1