USN-8758-1

It was discovered that dracut did not properly shell-quote messages written by the die() function to the emergency hook directory. An attacker on the adjacent network controlling a rogue DHCP server could use this issue to inject commands that execute as root during boot-failure handling. (CVE-2026-15816)

References

Affected packages

Ubuntu:26.04:LTS / dracut

Package

Name: dracut
Purl: pkg:deb/ubuntu/dracut?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

110-11ubuntu0.1

Affected versions

Other

108-3ubuntu3

108-8ubuntu1

109-5ubuntu1

109-7ubuntu1

109-9ubuntu1

109-11ubuntu1

110-1ubuntu2

110-3ubuntu1

110-5

110-7

110-10

110-11

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-install",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-test",
            "binary_version": "110-11ubuntu0.1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2026-15816",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8758-1.json"