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CVE-2026-15816high7.5

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

Impact

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.

Source excerpt · redhat

What to do

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

redhat guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Red Hat · Red Hat Enterprise Linux 10

Other versions: affected

Version / rangeSource status
0:107-9.el10_2 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support

Other versions: affected

Version / rangeSource status
0:105-4.el10_0.1 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

Other versions: affected

Version / rangeSource status
0:004-413.el6_10 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

Other versions: affected

Version / rangeSource status
0:004-414.el6_10 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support

Other versions: affected

Version / rangeSource status
0:033-577.el7_9 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 8

Other versions: affected

Version / rangeSource status
0:049-246.git20260728.el8_10 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:049-138.git20220131.el8_4.1 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:049-138.git20220131.el8_4.1 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:049-203.git20220511.el8_6.1 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:049-203.git20220511.el8_6.1 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Other versions: affected

Version / rangeSource status
0:049-223.git20230119.el8_8.1 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:049-223.git20230119.el8_8.1 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 9

Other versions: affected

Version / rangeSource status
0:057-120.git20260728.el9_8 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 9

Other versions: affected

Version / rangeSource status
0:057-120.git20260728.el9_8 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:057-25.git20250717.el9_2.2 to before *unaffected
redhat version evidence

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

Other versions: affected

Version / rangeSource status
0:057-54.git20250423.el9_4.3 to before *unaffected
redhat version evidence

Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support

Other versions: affected

Version / rangeSource status
0:057-89.git20250311.el9_6.1 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.12

Other versions: affected

Version / rangeSource status
412.86.202610250235-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.13

Other versions: affected

Version / rangeSource status
413.92.202609080414-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.14

Other versions: affected

Version / rangeSource status
414.92.202609011250-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.15

Other versions: affected

Version / rangeSource status
415.92.202609140326-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.16

Other versions: affected

Version / rangeSource status
416.94.202609011112-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.17

Other versions: affected

Version / rangeSource status
417.94.202609191027-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.18

Other versions: affected

Version / rangeSource status
418.94.202609031320-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.18

Other versions: affected

Version / rangeSource status
418.94.202609171815-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.19

Other versions: affected

Version / rangeSource status
4.19.9.6.202609021231-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.20

Other versions: affected

Version / rangeSource status
4.20.9.6.202608260604-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.21

Other versions: affected

Version / rangeSource status
4.21.9.6.202609021100-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.22

Other versions: affected

Version / rangeSource status
4.22.9.8.202608251819-0 to before *unaffected
redhat version evidence

Red Hat · Red Hat OpenShift Container Platform 4.22

Other versions: affected

Version / rangeSource status
4.22.9.8.202609081748-0 to before *unaffected
redhat version evidence

Original source 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.

References