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CVE-2026-15816

Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an attacker on the adjacent network who controls a rogue DHCP server can inject a command-substitution sequence that executes as root the next time dracut sources its emergency hook scripts during standard boot-failure handling.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • dracut

    Version range not reported

  • openshift/ose-rhel-coreos-8

    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

  • 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

  • dracut

    Version range not reported

References 25

access.redhat.com