CVE-2026-15816

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:54571
https://access.redhat.com/errata/RHSA-2026:54575
https://access.redhat.com/errata/RHSA-2026:54576
https://access.redhat.com/errata/RHSA-2026:57580
https://access.redhat.com/errata/RHSA-2026:57772
https://access.redhat.com/errata/RHSA-2026:57775
https://access.redhat.com/errata/RHSA-2026:57785
https://access.redhat.com/errata/RHSA-2026:60440
https://access.redhat.com/errata/RHSA-2026:60445
https://access.redhat.com/errata/RHSA-2026:61252
https://access.redhat.com/errata/RHSA-2026:62269
https://access.redhat.com/errata/RHSA-2026:62409
https://access.redhat.com/errata/RHSA-2026:62549
https://access.redhat.com/errata/RHSA-2026:63041
https://access.redhat.com/errata/RHSA-2026:63044
https://access.redhat.com/errata/RHSA-2026:66357
https://access.redhat.com/security/cve/CVE-2026-15816
https://bugzilla.redhat.com/show_bug.cgi?id=2459963
https://bugzilla.redhat.com/show_bug.cgi?id=2500889
https://github.com/dracutdevs/dracut/blob/master/modules.d/40network/netroot.sh
https://github.com/dracutdevs/dracut/blob/master/modules.d/99base/dracut-lib.sh

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-07 11:17

Updated : 2026-09-15 12:16

NVD link : CVE-2026-15816

Mitre link : CVE-2026-15816

CVE.ORG link : CVE-2026-15816

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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"https://access.redhat.com/errata/RHSA-2026:54571", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:54575", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:54576", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57580", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57772", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57775", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:57785", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:60440", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:60445", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:61252", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:62269", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:62409", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:62549", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:63041", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:63044", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:66357", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-15816", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500889", "source": "secalert@redhat.com"}, {"url": "https://github.com/dracutdevs/dracut/blob/master/modules.d/40network/netroot.sh", "source": "secalert@redhat.com"}, {"url": "https://github.com/dracutdevs/dracut/blob/master/modules.d/99base/dracut-lib.sh", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-15T12:16:57.790", "sourceIdentifier": "secalert@redhat.com"}