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Vulnerabilities CVE-2026-15816

CVE-2026-15816

High
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
7.5
EPSS Score
0.25%

16.5th percentile

CVSS Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Aug 7, 2026
Last Modified
Aug 7, 2026
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