CVE-2025-39823 Affecting kernel-devel package, versions <1:6.1.150-174.273.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELDEVEL-13166738
  • published1 Oct 2025
  • disclosed16 Sept 2025

Introduced: 16 Sep 2025

NewCVE-2025-39823  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-devel to version 1:6.1.150-174.273.amzn2023 or higher.
This issue was patched in ALAS2023-2025-1186.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel 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:

KVM: x86: use array_index_nospec with indices that come from guest

min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels.

CVSS Base Scores

version 3.1