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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | — | — |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.12 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.13 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.14 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.15 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.16 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.17 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.20 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.21 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.22 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dracut | 112-2 | — |
| Debian 13 | dracut | No fix yet | — |
| Debian 12 | dracut | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | dracut | 110-11ubuntu0.1 | USN-8828-1, USN-8758-1 |
| Ubuntu 24.04 LTS | dracut | 060+5-1ubuntu3.4 | USN-8828-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | dracut | 051-1ubuntu0.1~esm1 | USN-8828-1 |
| Ubuntu Pro 20.04 LTS | dracut | 048+80-2ubuntu0.1~esm1 | USN-8828-1 |
| Ubuntu Pro 18.04 LTS | dracut | 047-2ubuntu0.1~esm1 | USN-8828-1 |
| Ubuntu Pro 16.04 LTS | dracut | 044+3-3ubuntu0.1~esm1 | USN-8828-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | dracut +7 | 107-9.el10_2 | RHSA-2026:54576 |
| RHEL 9 | dracut +7 | 057-120.git20260728.el9_8 | RHSA-2026:54571 |
| RHEL 8 | dracut +7 | 049-246.git20260728.el8_10 | RHSA-2026:54575 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | dracut +1 | 105-4.el10_0.1 | RHSA-2026:57580 |
| RHEL 9.6 EUS | dracut +1 | 057-89.git20250311.el9_6.1 | RHSA-2026:57772 |
| RHEL 9.4 E4S | dracut +1 | 057-54.git20250423.el9_4.3 | RHSA-2026:57785 |
| RHEL 9.2 E4S | dracut +1 | 057-25.git20250717.el9_2.2 | RHSA-2026:57775 |
| RHEL 8.8 TUS | dracut +1 | 049-223.git20230119.el8_8.1 | RHSA-2026:61252 |
| RHEL 8.8 E4S | dracut +1 | 049-223.git20230119.el8_8.1 | RHSA-2026:61252 |
| RHEL 8.6 EUS Long Life | dracut +7 | 049-203.git20220511.el8_6.1 | RHSA-2026:69119 |
| RHEL 8.6 AUS | dracut +7 | 049-203.git20220511.el8_6.1 | RHSA-2026:69119 |
| RHEL 8.4 EUS Long Life | dracut +7 | 049-138.git20220131.el8_4.1 | RHSA-2026:69118 |
| RHEL 8.4 AUS | dracut +7 | 049-138.git20220131.el8_4.1 | RHSA-2026:69118 |
| RHEL 7 ELS | dracut +1 | 033-577.el7_9 | RHSA-2026:62269 |
| RHEL 6 ELS | dracut +7 | 004-413.el6_10 | RHSA-2026:79114, RHSA-2026:74499 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | dracut +7 | 107-9.el10_2 | ALSA-2026:54576 |
| AlmaLinux 9 | dracut +7 | 057-120.git20260728.el9_8 | ALSA-2026:54571 |
| AlmaLinux 8 | dracut +7 | 049-246.git20260728.el8_10 | ALSA-2026:54575 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | dracut | 107-9.el10_2 | RLSA-2026:54576 |
| Rocky Linux 9 | dracut | 057-120.git20260728.el9_8 | RLSA-2026:54571 |
| Rocky Linux 8 | dracut | 049-246.git20260728.el8_10 | RLSA-2026:54575 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | dracut | 059+suse.572.g753fdae1b-150700.3.20.1 | SUSE-SU-2026:3613-1 |
| SLES 15 SP6 | dracut | 059+suse.567.gf5cfeb7f7-150600.3.32.1 | SUSE-SU-2026:3612-1 |
| SLES 15 SP5 | dracut | 055+suse.404.gc96044c-150500.3.44.1 | SUSE-SU-2026:3611-1 |
| SLES 15 SP4 | dracut | 055+suse.367.g85633e8-150400.3.52.1 | SUSE-SU-2026:3599-1 |
| SLES 12 SP5 | dracut | 044.2-130.1 | SUSE-SU-2026:3598-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | dracut | 059+suse.726.gde083b3a1-160000.1.1 | SUSE-SU-2026:23314-1 |
| SLES for SAP 15 SP6 | dracut | 059+suse.567.gf5cfeb7f7-150600.3.32.1 | SUSE-SU-2026:3612-1 |
| SLES for SAP 15 SP5 | dracut | 055+suse.404.gc96044c-150500.3.44.1 | SUSE-SU-2026:3611-1 |
| SLES for SAP 15 SP4 | dracut | 055+suse.367.g85633e8-150400.3.52.1 | SUSE-SU-2026:3599-1 |
| SLES 16.0 | dracut | 059+suse.726.gde083b3a1-160000.1.1 | SUSE-SU-2026:23314-1 |
| SLE Micro 6.2 | dracut | 059+suse.726.gde083b3a1-160000.1.1 | SUSE-SU-2026:23276-1 |
| SLE Micro 6.1 | dracut | 059+suse.645.g79fd74d-slfo.1.1_1.1 | SUSE-SU-2026:23195-1 |
| SLE Micro 6.0 | dracut | 059+suse.611.g7d90691-1.1 | SUSE-SU-2026:23246-1 |
| SLE Micro 5.5 | dracut | 055+suse.404.gc96044c-150500.3.44.1 | SUSE-SU-2026:3611-1 |
| SLE Micro 5.4 | dracut | 055+suse.367.g85633e8-150400.3.52.1 | SUSE-SU-2026:3599-1 |
| SLE Micro 5.3 | dracut | 055+suse.367.g85633e8-150400.3.52.1 | SUSE-SU-2026:3599-1 |
| SLE HPC 15 SP5 | dracut | 055+suse.404.gc96044c-150500.3.44.1 | SUSE-SU-2026:3611-1 |
| SLE HPC 15 SP4 | dracut | 055+suse.367.g85633e8-150400.3.52.1 | SUSE-SU-2026:3599-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | dracut | 112+suse.29.gc0c5e1d-1.1 | openSUSE-SU-2026:11504-1 |
| openSUSE Leap 16.0 | dracut | 059+suse.726.gde083b3a1-160000.1.1 | openSUSE-SU-2026:21639-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | dracut +5 | 102-3.amzn2023.0.4 | ALAS2023-2026-2085 |
| Amazon Linux 2 | dracut +7 | 033-535.amzn2.1.8 | ALAS2-2026-3875 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | dracut +7 | 107-9.0.1.el10_2 | ELSA-2026-54576 |
| Oracle Linux 9 | dracut +7 | 057-120.git20260728.0.1.el9_8 | ELSA-2026-54571 |
| Oracle Linux 8 | dracut +7 | 049-246.git20260728.0.1.el8_10 | ELSA-2026-54575 |
Advisories 39
- RHSA-2026:69118 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-3595 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:54576 Important: dracut security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:54571 Important: dracut security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:54575 Important: dracut security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2835 Red Hat Enterprise Linux (yelp, dracut): Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- RHSA-2026:79114 Red Hat Security Advisory: dracut security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:74499 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:69119 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:62269 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:61252 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:57785 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:57772 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:57775 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:57580 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:54576 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:54571 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:54575 Red Hat Security Advisory: dracut security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-8828-1 dracut vulnerabilities Ubuntu Security Notices (USN) · Sep 28, 2026
- USN-8758-1 dracut vulnerability Ubuntu Security Notices (USN) · Sep 15, 2026
- SUSE-SU-2026:23314-1 Security update for dracut SUSE / openSUSE Security Updates · Sep 10, 2026
- SUSE-SU-2026:23276-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 31, 2026
- ALAS2-2026-3875 Important: dracut security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 31, 2026
- ALAS2023-2026-2085 Important: dracut security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 31, 2026
- openSUSE-SU-2026:21639-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 27, 2026
- SUSE-SU-2026:23246-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 27, 2026
- SUSE-SU-2026:23195-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 24, 2026
- RLSA-2026:54575 Important: dracut security update Rocky Linux Security Advisories · Aug 15, 2026
- SUSE-SU-2026:3611-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3612-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3613-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 14, 2026
- RLSA-2026:54571 Important: dracut security update Rocky Linux Security Advisories · Aug 14, 2026
- RLSA-2026:54576 Important: dracut security update Rocky Linux Security Advisories · Aug 14, 2026
- openSUSE-SU-2026:11504-1 dracut-112+suse.29.gc0c5e1d-1.1 on GA media SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3598-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 13, 2026
- SUSE-SU-2026:3599-1 Security update for dracut SUSE / openSUSE Security Updates · Aug 13, 2026
- ELSA-2026-54576 Important: dracut security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
- ELSA-2026-54571 Important: dracut security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
- ELSA-2026-54575 Important: dracut security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 13, 2026
References
- RHSA-2026:54571 vendor-advisory
- RHSA-2026:54575 vendor-advisory
- RHSA-2026:54576 vendor-advisory
- RHSA-2026:57580 vendor-advisory
- RHSA-2026:57772 vendor-advisory
- RHSA-2026:57775 vendor-advisory
- RHSA-2026:57785 vendor-advisory
- RHSA-2026:60440 vendor-advisory
- RHSA-2026:60445 vendor-advisory
- RHSA-2026:61252 vendor-advisory
- RHSA-2026:62269 vendor-advisory
- RHSA-2026:62409 vendor-advisory
- RHSA-2026:62549 vendor-advisory
- RHSA-2026:63041 vendor-advisory
- RHSA-2026:63044 vendor-advisory
- RHSA-2026:65839 vendor-advisory
- RHSA-2026:65851 vendor-advisory
- RHSA-2026:66357 vendor-advisory
- RHSA-2026:67857 vendor-advisory
- RHSA-2026:69118 vendor-advisory
- RHSA-2026:69119 vendor-advisory
- RHSA-2026:70586 vendor-advisory
- RHSA-2026:70615 vendor-advisory
- RHSA-2026:74499 vendor-advisory
- RHSA-2026:79114 vendor-advisory
- RHSA-2026:90272 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-15816 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=2459963
- RHBZ#2500889 issue-tracking
- 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