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CVE-2026-122192 Details

Description

Improper handling of a failed memory remap in Firecracker versions 0.23.0 through 1.16.1 might allow a guest user with root privileges to read or modify Firecracker VMM process memory via balloon or virtio-mem discard requests on microVMs restored from a snapshot with the File memory backend, if the host fails to create the replacement mapping. To remediate this issue, users should upgrade to Firecracker 1.16.2 or 1.17.0 and later.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: AMZNCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-169-aws/	AMZN
https://github.com/firecracker-microvm/firecracker/releases/tag/v1.16.2	AMZN
https://github.com/firecracker-microvm/firecracker/releases/tag/v1.17.0	AMZN
https://github.com/firecracker-microvm/firecracker/security/advisories/GHSA-48ww-rqpp-2mgm	AMZN

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-390	Detection of Error Condition Without Action	AMZN
CWE-825	Expired Pointer Dereference	AMZN

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes