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Description

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.

PUBLISHED Reserved 2026-04-23 | Published 2026-06-10 | Updated 2026-06-10 | Assigner redhat




HIGH: 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

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

Product status

Default status
affected

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unknown

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affected

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affected

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affected

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affected

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affected

Timeline

2026-04-21:Reported to Red Hat.
2026-06-10:Made public.

References

access.redhat.com/security/cve/CVE-2026-6893 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2459963 (RHBZ#2459963) issue-tracking

cve.org (CVE-2026-6893)

nvd.nist.gov (CVE-2026-6893)

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