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.

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Vendors Products
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Hardened Images Subscribe
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Rhel E4s Subscribe
Rhel Els Subscribe
Rhel Eus Subscribe
Rhel Tus Subscribe
Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-8758-1 dracut vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

Restrict DHCP server access on networks used for network boot (DHCP snooping, dedicated/trusted provisioning VLANs) until a fix is available.

History

Tue, 15 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
References

Mon, 14 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.14::el9
References

Thu, 10 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.16::el9
References

Wed, 09 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.19::el9
References

Tue, 08 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.21::el9
References

Wed, 02 Sep 2026 02:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.20::el9
cpe:/a:redhat:openshift:4.22::el9
References

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
References

Mon, 31 Aug 2026 03:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Tus
CPEs cpe:/o:redhat:rhel_e4s:8.8::baseos
cpe:/o:redhat:rhel_tus:8.8::baseos
Vendors & Products Redhat rhel Tus
References

Thu, 20 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/o:redhat:rhel_eus:9.6::baseos
Vendors & Products Redhat rhel Eus
References

Thu, 20 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.4::appstream
cpe:/o:redhat:rhel_e4s:9.4::baseos
References

Thu, 20 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/o:redhat:rhel_e4s:9.2::baseos
Vendors & Products Redhat rhel E4s
References

Thu, 20 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
CPEs cpe:/o:redhat:enterprise_linux_eus:10.0
Vendors & Products Redhat enterprise Linux Eus
References

Thu, 13 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:10.2
cpe:/o:redhat:enterprise_linux:8::baseos
cpe:/o:redhat:enterprise_linux:9::baseos
References

Sat, 08 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hardened Images
Redhat openshift Container Platform
Vendors & Products Redhat hardened Images
Redhat openshift Container Platform

Fri, 07 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 07 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Fri, 07 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-78
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-15T11:24:59.077Z

Reserved: 2026-07-15T11:41:57.564Z

Link: CVE-2026-15816

cve-icon Vulnrichment

Updated: 2026-08-07T14:33:13.841Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-07T11:17:05.100

Modified: 2026-09-15T12:16:57.790

Link: CVE-2026-15816

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-05T23:59:00Z

Links: CVE-2026-15816 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-08T20:53:12Z

Weaknesses