CVE-2025-14946
Libnbd: libnbd: arbitrary code execution via ssh argument injection through a malicious uri
A flaw was found in libnbd. A malicious actor could exploit this by convincing libnbd to open a specially crafted Uniform Resource Identifier (URI). This vulnerability arises because non-standard hostnames starting with '-o' are incorrectly interpreted as arguments to the Secure Shell (SSH) process, rather than as hostnames. This could lead to arbitrary code execution with the privileges of the user running libnbd.
Fixes and workarounds
Workaround
To mitigate this issue, ensure that applications utilizing libnbd do not process Uniform Resource Identifiers (URIs) from untrusted or unverified sources. This vulnerability requires a malicious actor to convince libnbd to open a specially crafted URI, therefore restricting the sources of URIs processed by libnbd can reduce exposure.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| libnbd Red Hat libnbd
https://gitlab.com/nbdkit/libnbd |
≥ 1.22.0; < 1.22.5 (affected, semver) ≥ 1.23.0; < 1.23.9 (affected, semver) Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 10 Red Hat libnbd
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat virt:rhel/libnbd
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat libnbd
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-apiserver
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-apiserver-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-cloner
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-cloner-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-controller
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-controller-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-importer
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-importer-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-operator
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-operator-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-uploadproxy
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-uploadproxy-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-uploadserver
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat OpenShift Virtualization 4 Red Hat container-native-virtualization/virt-cdi-uploadserver-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 4.8 medium |
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/security/cve/CVE-2025-14946CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2423789CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://libguestfs.org/libnbd-release-notes-1.24.1.html#SecurityCNA: redhat
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