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AWS Security BulletinsCVE-2026-122192

CVE-2026-122192 - Guest Access to Firecracker Process Memory After a Failed Memory Discard

Severity not listed 1 CVE Published Nov 4, 2026 at 7:40 PM UTC

Summary

Bulletin ID: 2026-169-AWS

Publication Date: 11/04/2026 11:30 AM PST

Description:

We identified CVE-2026-122192, an issue in Firecracker v0.23.0 through v1.16.1 that, under certain host memory conditions, can let a root user in a guest read or modify memory of the Firecracker process. It affects VMs restored from a snapshot using the File memory backend with a balloon or virtio-mem device.

Impacted versions: Firecracker v0.23.0 through v1.16.1, inclusive.

Refer to the article below for the most up-to-date and complete information.

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Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

  1. Published by AWS

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.