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CVE-2026-4111

Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    Version range not reported

  • openshift/ose-rhel-coreos-9

    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

  • rhaiis/model-opt-cuda-rhel9

    Version range not reported

  • rhaiis/vllm-cuda-rhel9

    Version range not reported

  • rhaiis/model-opt-cuda-rhel9

    Version range not reported

  • rhaiis/vllm-rocm-rhel9

    Version range not reported

  • rhaiis/vllm-spyre-rhel9

    Version range not reported

  • rhaiis/vllm-cuda-rhel9

    Version range not reported

  • discovery/discovery-server-rhel9

    Version range not reported

  • discovery/discovery-ui-rhel9

    Version range not reported

  • libarchive-main

    Version range not reported

  • insights-proxy/insights-proxy-container-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

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • libarchive

    Version range not reported

  • openshift/ose-rhel-coreos-8

    Version range not reported

References 25

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