CVE-2026-6893— Dracut: dracut: root code execution via dhcp options command injection
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:107-7.el10_2< * | unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | any | unknown |
| Red Hat | Red Hat Enterprise Linux 7 | any | affected |
| Red Hat | Red Hat Enterprise Linux 8 | 0:049-244.git20260529.el8_10< * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:057-115.git20260527.el9_8< * | unaffected |
0:057-115.git20260527.el9_8< * | unaffected | ||
| Red Hat | Red Hat Hardened Images | 109-6.hum1< * | unaffected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any | affected |
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I. Basic Information for CVE-2026-6893
Vulnerability Information
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Vulnerability Title
Dracut: dracut: root code execution via dhcp options command injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
dracut 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dracut是dracutdevs开源的一个事件驱动的initramfs生成工具。 dracut存在操作系统命令注入漏洞，该漏洞源于远程攻击者通过提供特制DHCP选项，这些选项被不当处理并写入临时shell脚本，导致命令注入，从而在initramfs中实现root代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:107-7.el10_2 ~ * | cpe:/o:redhat:enterprise_linux:10.2 | |
| Red Hat | Red Hat Enterprise Linux 8 | 0:049-244.git20260529.el8_10 ~ * | cpe:/o:redhat:enterprise_linux:8::baseos | |
| Red Hat | Red Hat Enterprise Linux 9 | 0:057-115.git20260527.el9_8 ~ * | cpe:/a:redhat:enterprise_linux:9::appstream | |
| Red Hat | Red Hat Enterprise Linux 9 | 0:057-115.git20260527.el9_8 ~ * | cpe:/a:redhat:enterprise_linux:9::appstream | |
| Red Hat | Red Hat Hardened Images | 109-6.hum1 ~ * | cpe:/a:redhat:hummingbird:1 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2026-6893
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-6893 (5)
- 🔗 2459963 – (CVE-2026-6893) CVE-2026-6893 dracut: dracut: Root code execution via DHCP options command injection Read full article issue-trackingx_refsource_REDHAT
- 🔗 RHSA-2026:26534 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
Other References for CVE-2026-6893 (1)
Same Patch Batch · Red Hat · 2026-06-10 · 3 CVEs total
| CVE-2026-11837 | 7.3 HIGH | Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation |
| CVE-2026-11884 | 6.5 MEDIUM | 389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
- CVE-2026-61477
Libvirt: libvirt: newline injection in network xml dns txt/s - CVE-2026-15816
Dracut: dracut: root code execution via unescaped error mess - CVE-2026-18938
P11-kit: integer overflow in rpc attribute-array length calc - CVE-2026-7867
Udisks2: udisks2: local privilege escalation via as-user opt - CVE-2026-18649
Gst-plugins-good: gst-plugins-good: unbounded memory growth
Same vendor: Red Hat
- CVE-2026-61477
Libvirt: libvirt: newline injection in network xml dns txt/s - CVE-2026-15816
Dracut: dracut: root code execution via unescaped error mess - CVE-2026-18938
P11-kit: integer overflow in rpc attribute-array length calc - CVE-2026-19079
Policycoreutils: policycoreutils: toctou race condition in f - CVE-2026-7867
Udisks2: udisks2: local privilege escalation via as-user opt
Same weakness: CWE-78
- CVE-2026-48122
Workspace settings can override executable and Gemfile paths - CVE-2026-19243
HKUDS nanobot Shell Allowlist shell.py ExecTool._spawn os co - CVE-2026-48098
NexTOR IP Changer Unsafely Uses sudo and shell=True - CVE-2026-48097
NexTOR_IP_CHANGER has PATH Injection Leading to Arbitrary Co - CVE-2026-15816
Dracut: dracut: root code execution via unescaped error mess
V. Comments for CVE-2026-6893
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