CVE-2025-64324
published 2025-11-18CVE-2025-64324: KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user…
PriorityP345high7.7CVSS 3.1
AVLACLPRNUINSUCHIHAN
EPSS
0.21%
10.9th percentile
KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, prior to version 1.6.1 and 1.7.0, the implementation of this feature and more specifically the `DiskOrCreate` option (which creates a file if it doesn't exist) has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system. Versions 1.6.1 and 1.7.0 fix the issue.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| kubevirt.io | kubevirt | >= 0 < 1.6.1 | 1.6.1 |
| kubevirt.io | kubevirt | >= 1.6.2 < 1.7.0-rc.0 | 1.7.0-rc.0 |
| kubevirt.io | kubevirt | >= 1.7.0-alpha.0 < 1.7.0-rc.0 | 1.7.0-rc.0 |
| kubevirt | kubevirt | < 1.6.1 | 1.6.1 |
| kubevirt | kubevirt | — | — |
| kubevirt | kubevirt | >= 1.7.0-alpha.0 < 1.7.0-rc.0 | 1.7.0-rc.0 |
| msrc | azl3_kubevirt_1.5.0-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_kubevirt_1.5.3-2_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kubevirt_0.59.0-30_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.7HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv4.08.5HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_msrc8.5HIGH
vendor_redhat8.5HIGH
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OSV
KubeVirt Vulnerable to Arbitrary Host File Read and Write in kubevirt.io/kubevirt
osv·2025-11-17
CVE-2025-64324 KubeVirt Vulnerable to Arbitrary Host File Read and Write in kubevirt.io/kubevirt
KubeVirt Vulnerable to Arbitrary Host File Read and Write in kubevirt.io/kubevirt
KubeVirt Vulnerable to Arbitrary Host File Read and Write in kubevirt.io/kubevirt
GHSA
KubeVirt Vulnerable to Arbitrary Host File Read and Write
ghsa·2025-11-07
CVE-2025-64324 [HIGH] CWE-123 KubeVirt Vulnerable to Arbitrary Host File Read and Write
KubeVirt Vulnerable to Arbitrary Host File Read and Write
### Summary
The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, the implementation of this feature and more specifically the `DiskOrCreate` option which creates a file if it doesn't exist, has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system.
### Details
The `hostDisk` feature gate in KubeVirt allows mounting a QEMU RAW image directly from the host into a VM. While similar features, such as mounting disk images from a PVC, enforce ownership-based restrictions (e.g., only allowing files owned by specific UID, this mechanism can be subverted. For a RAW disk image to be readable by the QEM
OSV
KubeVirt Vulnerable to Arbitrary Host File Read and Write
osv·2025-11-07
CVE-2025-64324 [HIGH] KubeVirt Vulnerable to Arbitrary Host File Read and Write
KubeVirt Vulnerable to Arbitrary Host File Read and Write
### Summary
The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, the implementation of this feature and more specifically the `DiskOrCreate` option which creates a file if it doesn't exist, has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system.
### Details
The `hostDisk` feature gate in KubeVirt allows mounting a QEMU RAW image directly from the host into a VM. While similar features, such as mounting disk images from a PVC, enforce ownership-based restrictions (e.g., only allowing files owned by specific UID, this mechanism can be subverted. For a RAW disk image to be readable by the QEM
Red Hat
kubevirt.io/kubevirt: KubeVirt: Arbitrary file read/write and privilege escalation via hostDisk feature
vendor_redhat·2025-11-18·CVSS 8.5
CVE-2025-64324 [HIGH] CWE-708 kubevirt.io/kubevirt: KubeVirt: Arbitrary file read/write and privilege escalation via hostDisk feature
kubevirt.io/kubevirt: KubeVirt: Arbitrary file read/write and privilege escalation via hostDisk feature
KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, prior to version 1.6.1 and 1.7.0, the implementation of this feature and more specifically the `DiskOrCreate` option (which creates a file if it doesn't exist) has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system. Versions 1.6.1 and 1.7.0 fix the issue.
A flaw was found in KubeVirt's hostDisk feature. A logic bug in the DiskOrCreate option, which creates a file if it doesn't exist when mounting host files or directories into a V
Microsoft
KubeVirt Vulnerable to Arbitrary Host File Read and Write
vendor_msrc·2025-11-11·CVSS 8.5
CVE-2025-64324 [HIGH] CWE-200 KubeVirt Vulnerable to Arbitrary Host File Read and Write
KubeVirt Vulnerable to Arbitrary Host File Read and Write
Mariner: Mariner
GitHub_M: GitHub_M
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-11-18
Published