Bug 2441025 (CVE-2026-24834)

Summary: CVE-2026-24834 containerd-shim-kata-v2: Kata Containers: Arbitrary code execution in guest virtual machine via file system modification
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Kata Containers. A user of a container can exploit this vulnerability by modifying the file system used by the Guest micro Virtual Machine (VM). This allows the attacker to achieve arbitrary code execution as root within the compromised Guest VM. This issue does not impact the security of the host or other containers/VMs running on the host.
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Bug Depends On: 2441145, 2441146    
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Description OSIDB Bzimport 2026-02-19 17:04:18 UTC 
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. In versions prior to 3.27.0, an issue in Kata with Cloud Hypervisor allows a user of the container to modify the file system used by the Guest micro VM ultimately achieving arbitrary code execution as root in said VM. The current understanding is this doesn’t impact the security of the Host or of other containers / VMs running on that Host (note that arm64 QEMU lacks NVDIMM read-only support: It is believed that until the upstream QEMU gains this capability, a guest write could reach the image file). Version 3.27.0 patches the issue.