Bug 2506563 (CVE-2026-44210) - CVE-2026-44210 kata-containers: Kata Containers: Privilege escalation and information disclosure via command-line argument injection
Summary: CVE-2026-44210 kata-containers: Kata Containers: Privilege escalation and inf...
Keywords:
Status: NEW
Alias: CVE-2026-44210
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: 2509231
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-23 18:02 UTC by OSIDB Bzimport
Modified: 2026-07-30 10:36 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-07-23 18:02:25 UTC
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd process through the `io.katacontainers.config.hypervisor.virtio_fs_extra_args` pod annotation. By injecting `-o source=/` along with `--no-announce-submounts` and `--sandbox=none`, an attacker can override the virtiofsd shared directory to serve the entire host root filesystem into the guest VM. Combined with the `kernel_params` annotation (also enabled by default) to activate the agent debug console, the attacker can mount the host filesystem from inside the VM and read or write any file on the host, including /etc/shadow. Version 3.31.0 patches the issue.


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