Bug 2456323 (CVE-2026-5747) - CVE-2026-5747 firecracker: Firecracker: Arbitrary code execution or denial of service via out-of-bounds write in virtio PCI transport
Summary: CVE-2026-5747 firecracker: Firecracker: Arbitrary code execution or denial of...
Keywords:
Status: NEW
Alias: CVE-2026-5747
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2456351 2456350
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-08 00:01 UTC by OSIDB Bzimport
Modified: 2026-04-08 04:17 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-04-08 00:01:26 UTC 
An out-of-bounds write issue in the virtio PCI transport in Amazon Firecracker 1.13.0 through 1.14.3 and 1.15.0 on x86_64 and aarch64 might allow a local guest user with root privileges to crash the Firecracker VMM process or potentially execute arbitrary code on the host via modification of virtio queue configuration registers after device activation. Achieving code execution on the host requires additional preconditions, such as the use of a custom guest kernel or specific snapshot configurations.

To remediate this, users should upgrade to Firecracker 1.14.4 or 1.15.1 and later.
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