Bug 2567842 (CVE-2026-122192) - CVE-2026-122192 firecracker: firecracker: Unauthorized host memory access via failed memory remap
Summary: CVE-2026-122192 firecracker: firecracker: Unauthorized host memory access via...
Keywords:
Status: NEW
Alias: CVE-2026-122192
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-05 22:30 UTC by OSIDB Bzimport
Modified: 2026-11-06 01:53 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-11-05 22:30:31 UTC 
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.
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