CVE-2026-9149
Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file
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What happened?
A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| libsolvRed Hat | unaffected: 0:0.7.33-5.el10_2 to < * | See vendor advisory |
| libsolvRed Hat | unaffected: 0:0.7.29-8.el10_0.1 to < * | See vendor advisory |
| libsolv-mainRed Hat | unaffected: 0.7.38-2.hum1 to < * | See vendor advisory |
| libsolvRed Hat | Default status: affected | See vendor advisory |
| libsolvRed Hat | Default status: affected | See vendor advisory |
| libsolvRed Hat | Default status: affected | See vendor advisory |
| rhoai/odh-ai-gateway-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-core-bff-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-dashboard-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-dashboard-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-data-science-pipelines-operator-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kf-notebook-controller-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-kserve-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kserve-llmisvc-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kserve-module-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kuberay-operator-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-kube-rbac-proxy-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-llama-stack-k8s-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-maas-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mlflow-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mlflow-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-mod-arch-agent-ops-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-automl-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-autorag-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-eval-hub-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-gen-ai-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-maas-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-mlflow-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-mod-arch-model-registry-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-model-controller-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-model-registry-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-model-serving-api-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-notebook-controller-rhel9Red Hat | Default status: unknown | See vendor advisory |
| rhoai/odh-ogx-k8s-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-ogx-module-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-training-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-trustyai-service-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| rhoai/odh-workbenches-operator-rhel9Red Hat | Default status: unaffected | See vendor advisory |
| openshift/ose-rhel-coreos-8Red Hat | Default status: affected | See vendor advisory |
| openshift/ose-rhel-coreos-9Red Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.
Sources and remediation references
- https://www.cve.org/CVERecord?id=CVE-2026-9149
- https://access.redhat.com/errata/RHSA-2026:21333
- https://access.redhat.com/errata/RHSA-2026:28236
- https://access.redhat.com/errata/RHSA-2026:48818
- https://access.redhat.com/security/cve/CVE-2026-9149
- https://bugzilla.redhat.com/show_bug.cgi?id=2460380
- https://github.com/openSUSE/libsolv/pull/617