CVE-2026-122192 (GCVE-0-2026-122192)

Vulnerability from cvelistv5 – Published: 2026-11-04 19:35 – Updated: 2026-11-09 21:06
VLAI
Title
Guest access to Firecracker process memory after a failed memory discard
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
7.1 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 21:05 UTC
CWE
  • CWE-390 - Detection of error condition without action
  • CWE-825 - Expired pointer dereference
Assigner
AMZN CNA
References
Impacted products
Vendor Product Version
AWS firecracker Affected: 0.23.0 , < 1.16.2 (custom)
    cpe:2.3:a:aws:firecracker:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Coinspect
Show details on NVD website
To clipboard 

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