OESA-2026-3473 (CVE-2026-15816)

Vulnerability from osv_openeuler – Published: 2026-08-20 10:00 – Updated: 2026-08-20 10:00 – Source website
VLAI
Summary
dracut security update
Details

dracut contains tools to create bootable initramfses for the Linux kernel. Unlike previous implementations, dracut hard-codes as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as well as NFS, iSCSI, NBD, FCoE with the dracut-network package.

Security Fix(es):

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.(CVE-2026-15816)

Severity
7.5 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "dracut-059-18.oe2403sp3.aarch64.rpm",
          "dracut-caps-059-18.oe2403sp3.aarch64.rpm",
          "dracut-config-generic-059-18.oe2403sp3.aarch64.rpm",
          "dracut-config-rescue-059-18.oe2403sp3.aarch64.rpm",
          "dracut-debuginfo-059-18.oe2403sp3.aarch64.rpm",
          "dracut-debugsource-059-18.oe2403sp3.aarch64.rpm",
          "dracut-live-059-18.oe2403sp3.aarch64.rpm",
          "dracut-network-059-18.oe2403sp3.aarch64.rpm",
          "dracut-squash-059-18.oe2403sp3.aarch64.rpm",
          "dracut-tools-059-18.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "dracut-059-18.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "dracut-059-18.oe2403sp3.x86_64.rpm",
          "dracut-caps-059-18.oe2403sp3.x86_64.rpm",
          "dracut-config-generic-059-18.oe2403sp3.x86_64.rpm",
          "dracut-config-rescue-059-18.oe2403sp3.x86_64.rpm",
          "dracut-debuginfo-059-18.oe2403sp3.x86_64.rpm",
          "dracut-debugsource-059-18.oe2403sp3.x86_64.rpm",
          "dracut-live-059-18.oe2403sp3.x86_64.rpm",
          "dracut-network-059-18.oe2403sp3.x86_64.rpm",
          "dracut-squash-059-18.oe2403sp3.x86_64.rpm",
          "dracut-tools-059-18.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "dracut",
        "purl": "pkg:rpm/openEuler/dracut\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "059-18.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "dracut contains tools to create bootable initramfses for the Linux kernel. Unlike previous implementations, dracut hard-codes as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as well as NFS, iSCSI, NBD, FCoE with the dracut-network package.\r\n\r\nSecurity Fix(es):\n\nA 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.(CVE-2026-15816)",
  "id": "OESA-2026-3473",
  "modified": "2026-08-20T10:00:49Z",
  "published": "2026-08-20T10:00:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3473"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15816"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dracut security update",
  "upstream": [
    "CVE-2026-15816"
  ]
}



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