Red Hat Security Advisory: dracut security update

Fixed packages 4

Vulnerabilities 3

• High 7.5
  CVE-2026-15816

  Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()

  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 atta…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 10 Linux Debian Ubuntu
  Aug 7, 2026
• High 7.5
  CVE-2026-16445

  Dracut: dracut: root code execution via dhcp options command injection in networkmanager initrd module

  A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut's NetworkManager-based ini…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu
  Jul 21, 2026
• High 7.5
  CVE-2026-6893

  Dracut: dracut: root code execution via dhcp options command injection

  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. …

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 10 Linux Debian Ubuntu Azure Linux
  Jun 10, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2459963
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2500889
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2503147
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_61252.json
• report
  https://access.redhat.com/security/cve/CVE-2026-6893
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-6893
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-6893
• report
  https://access.redhat.com/security/cve/CVE-2026-15816
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-15816
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-15816
• article
  https://github.com/dracutdevs/dracut/blob/master/modules.d/40network/netroot.sh
• article
  https://github.com/dracutdevs/dracut/blob/master/modules.d/99base/dracut-lib.sh
• report
  https://access.redhat.com/security/cve/CVE-2026-16445
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-16445
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-16445
• article
  https://access.redhat.com/errata/RHSA-2026:26534
• article
  https://github.com/dracutdevs/dracut/commit/e509c638e6