Vulnerability-Lookup

GHSA-RCFC-7M3G-H5XH

Vulnerability from github – Published: 2026-06-24 21:30 – Updated: 2026-08-11 21:32

Details

A flaw was found in KubeVirt's safepath package. The OpenAtNoFollow function uses O_PATH|O_NOFOLLOW to obtain a file descriptor to a path leaf, but downstream helpers operate via /proc/self/fd/N using link-following syscalls. When the leaf is a symlink, the kernel dereferences it, defeating the intended no-follow protection. An attacker with access to a virt-launcher pod can exploit this to cause virt-handler to apply file ownership or permission changes to an unintended host path.

Severity

5.2 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

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{
  "affected": [],
  "aliases": [
    "CVE-2026-13201"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-61"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T21:16:52Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in KubeVirt\u0027s safepath package. The OpenAtNoFollow function uses O_PATH|O_NOFOLLOW to obtain a file descriptor to a path leaf, but downstream helpers operate via /proc/self/fd/N using link-following syscalls. When the leaf is a symlink, the kernel dereferences it, defeating the intended no-follow protection. An attacker with access to a virt-launcher pod can exploit this to cause virt-handler to apply file ownership or permission changes to an unintended host path.",
  "id": "GHSA-rcfc-7m3g-h5xh",
  "modified": "2026-08-11T21:32:23Z",
  "published": "2026-06-24T21:30:44Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13201"
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}

CVE-2026-13201 (GCVE-0-2026-13201)

Vulnerability from cvelistv5 – Published: 2026-06-24 20:39 – Updated: 2026-09-08 18:46

Title

Kubevirt: virt-handler-rhel9: kubevirt: safepath symlink following in virt-handler enables notify socket hijacking and node-level vm disruption

Summary

A flaw was found in KubeVirt's safepath package used by virt-handler. The OpenAtNoFollow function uses O_PATH|O_NOFOLLOW to obtain a file descriptor to a path leaf, but downstream operations resolve the path via /proc/self/fd/N using link-following syscalls. When the leaf is a symlink, the kernel dereferences it, defeating the intended no-follow protection. An attacker with access to a virt-launcher pod can exploit this to redirect virt-handler's IPC socket connections, including the notify socket used for VM domain lifecycle events. By hijacking this socket, the attacker can inject arbitrary domain events into virt-handler, causing it to take incorrect lifecycle actions, corrupt VM state in the Kubernetes API, or crash — resulting in sustained denial of VM management services for all virtual machines on the affected node. Additionally, the same symlink following flaw allows virt-handler to apply file ownership or permission changes to unintended host paths.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-25 23:04 UTC

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following

Assigner

redhat redhat root

References

12 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:51031	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53655	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53671	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53684	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53721	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53728	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53763	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53797	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53826	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53838	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-13201	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492203	issue-trackingx_refsource_REDHAT

Impacted products

11 products

Vendor	Product	Version
Red Hat	Red Hat Container Native Virtualization 4.13	Unaffected: 1786346596 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.13::el9
Red Hat	Red Hat Container Native Virtualization 4.14	Unaffected: 1786309624 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.14::el9
Red Hat	Red Hat Container Native Virtualization 4.15	Unaffected: 1786347656 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.15::el9
Red Hat	Red Hat Container Native Virtualization 4.16	Unaffected: 1786030071 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.16::el9
Red Hat	Red Hat Container Native Virtualization 4.17	Unaffected: 1786348529 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.17::el9
Red Hat	Red Hat Container Native Virtualization 4.18	Unaffected: 1786130068 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.18::el9
Red Hat	Red Hat Container Native Virtualization 4.19	Unaffected: 1786334215 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.19::el9
Red Hat	Red Hat Container Native Virtualization 4.2	Unaffected: 1785831334 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.20::el9
Red Hat	Red Hat Container Native Virtualization 4.21	Unaffected: 1785829701 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.21::el9
Red Hat	Red Hat Container Native Virtualization 4.22	Unaffected: 1785140336 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.22::el9
Red Hat	Red Hat OpenShift Virtualization 4	cpe:/a:redhat:container_native_virtualization:4

Date Public

2026-06-24 00:00

Credits

This issue was discovered by Huzaifa Sidhpurwala (Red Hat).

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.