CVE-2026-15816

HIGH 7.5

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

CVSS Score

7.5

EPSS Score

0.3%

EPSS Percentile

23th

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.

CWE	CWE-78
Vendor	red hat
Product	red hat enterprise linux 10
Published	Aug 7, 2026
Last Updated	Sep 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.13

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.14

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.16

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.18

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.19

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.20

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.21

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.22

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.22

All versions affected

Red Hat / Red Hat Enterprise Linux 6

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

This issue was discovered by Pavel Valena (Red Hat).