Incorrect Calculation of Buffer Size Affecting kernel package, versions <0:4.14.355-281.727.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-KERNEL-16732574
  • published18 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

NewCVE-2026-43077  (opens in a new tab)
CWE-131  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.355-281.727.amzn2 or higher.
This issue was patched in ALAS2-2026-3289.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

crypto: algif_aead - Fix minimum RX size check for decryption

The check for the minimum receive buffer size did not take the tag size into account during decryption. Fix this by adding the required extra length.

CVSS Base Scores

version 3.1