CVE-2026-6893

EUVD-2026-36110

10.06.2026, 20:17

A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP (Dynamic Host Configuration Protocol) options, such as a malicious hostname, to a system using dracut's legacy DHCP path. These options are improperly handled and written into temporary shell scripts without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs, potentially compromising the system's boot and network behavior.

OS Command Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	ADJACENT_NETWORK	HIGH	NONE	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 67.55%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
Red Hat	Red Hat Enterprise Linux 10	0:107-7.el10_2 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	0:105-4.el10_0.1 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	0:033-577.el7_9 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 8	0:049-244.git20260529.el8_10 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	0:049-223.git20230119.el8_8.1 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	0:049-223.git20230119.el8_8.1 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 9	0:057-115.git20260527.el9_8 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	0:057-25.git20250717.el9_2.2 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	0:057-54.git20250423.el9_4.3 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	0:057-89.git20250311.el9_6.1 ≤ 𝑥 < *	ADP
Red Hat	Red Hat Hardened Images	109-6.hum1 ≤ 𝑥 < *	ADP

Debian Releases

Debian Product

Codename

dracut

bookworm	vulnerable
forky	112-2 fixed
sid	112-5 fixed
trixie	no-dsa

Ubuntu Releases

Ubuntu Product

Codename

dracut

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	needs-triage
questing	ignored
resolute	needs-triage
xenial	needs-triage

Red Hat Enterprise Linux Releases

Red Hat Product

Release

dracut

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 8.8 TUS	0:049-223.git20230119.el8_8.1 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-caps

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-config-generic

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-config-rescue

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-live

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-network

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 8.8 TUS	0:049-223.git20230119.el8_8.1 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-squash

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

dracut-tools

RHEL 8	0:049-244.git20260529.el8_10 fixed
RHEL 9	0:057-115.git20260527.el9_8 fixed

Amazon Linux Releases

Amazon Package

Release

dracut

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

dracut-caps

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

dracut-config-generic

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

dracut-config-rescue

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

dracut-debuginfo

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

dracut-debugsource

Amazon Linux 2023

0:102-3.amzn2023.0.3

fixed

dracut-fips

Amazon Linux 2

0:033-535.amzn2.1.7

fixed

dracut-fips-aesni

Amazon Linux 2

0:033-535.amzn2.1.7

fixed

dracut-network

Amazon Linux 2

0:033-535.amzn2.1.7

fixed

dracut-squash

Amazon Linux 2023

0:102-3.amzn2023.0.3

fixed

dracut-tools

Amazon Linux 2	0:033-535.amzn2.1.7 fixed
Amazon Linux 2023	0:102-3.amzn2023.0.3 fixed

Common Weakness Enumeration

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References

https://access.redhat.com/errata/RHSA-2026:26532

https://access.redhat.com/errata/RHSA-2026:26533

https://access.redhat.com/errata/RHSA-2026:26534

https://access.redhat.com/errata/RHSA-2026:26713

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-2026:61252

https://access.redhat.com/errata/RHSA-2026:62269

https://access.redhat.com/security/cve/CVE-2026-6893

https://bugzilla.redhat.com/show_bug.cgi?id=2459963

https://access.redhat.com/errata/RHSA-2026:26532

https://access.redhat.com/errata/RHSA-2026:26533

https://access.redhat.com/errata/RHSA-2026:26534

https://access.redhat.com/errata/RHSA-2026:26713

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-2026:61252

https://access.redhat.com/errata/RHSA-2026:62269

https://access.redhat.com/security/cve/CVE-2026-6893

https://bugzilla.redhat.com/show_bug.cgi?id=2459963

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6893.json