RHSA-2026:74499 - Security Advisory

Topic

An update for dracut is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The dracut packages contain an event-driven initial RAM file system (initramfs) generator infrastructure based on the udev device manager. The virtual file system, initramfs, is loaded together with the kernel at boot time and initializes the system, so it can read and boot from the root partition.

Security Fix(es):

• dracut: dracut: Root code execution via DHCP options command injection (CVE-2026-6893)
• dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die() (CVE-2026-15816)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 2459963 - CVE-2026-6893 dracut: dracut: Root code execution via DHCP options command injection
• BZ - 2500889 - CVE-2026-15816 dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()

CVEs

• CVE-2026-6893
• CVE-2026-15816

References

• https://access.redhat.com/security/updates/classification/#important