VULNERABILITY INTELLIGENCE
CVE-2026-15816
CVSS score7.5 HIGH
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-08-07
Last modified2026-10-30
CVSS vectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
Weakness classification
- secalert@redhat.com: CWE-78