Bug 2456323 (CVE-2026-5747)
| Summary: | CVE-2026-5747 firecracker: Firecracker: Arbitrary code execution or denial of service via out-of-bounds write in virtio PCI transport | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Firecracker, specifically an out-of-bounds write issue within the virtio PCI transport. A local guest user with root privileges can exploit this by modifying virtio queue configuration registers after device activation. This could lead to crashing the Firecracker Virtual Machine Monitor (VMM) process, resulting in a denial of service. Under specific preconditions, such as using a custom guest kernel or certain snapshot configurations, this flaw may also allow for arbitrary code execution on the host system.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2456351, 2456350 | ||
| Bug Blocks: | |||
|
Description
OSIDB Bzimport
2026-04-08 00:01:26 UTC
|