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.
References10
- access.redhat.com/errata/RHSA-2026:54571
- access.redhat.com/errata/RHSA-2026:54575
- access.redhat.com/errata/RHSA-2026:54576
- access.redhat.com/errata/RHSA-2026:57580
- access.redhat.com/errata/RHSA-2026:57772
- access.redhat.com/errata/RHSA-2026:57775
- access.redhat.com/errata/RHSA-2026:57785
- access.redhat.com/errata/RHSA-2026:60440
- access.redhat.com/errata/RHSA-2026:60445
- access.redhat.com/errata/RHSA-2026:61252
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 12 November 2026
- CWE
- CWE-78
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.