CVE-2026-6893

Publication date 10 June 2026

Last updated 28 September 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
dracut 26.04 LTS resolute
Not affected
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 060+5-1ubuntu3.4
22.04 LTS jammy
Fixed 051-1ubuntu0.1~esm1
20.04 LTS focal
Fixed 048+80-2ubuntu0.1~esm1
18.04 LTS bionic
Fixed 047-2ubuntu0.1~esm1
16.04 LTS xenial
Fixed 044+3-3ubuntu0.1~esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
dracut

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-8828-1
    • dracut vulnerabilities
    • 28 September 2026

Other references

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