CVE-2026-6893
Discovered by AISLEPUBLISHEDCWE-78
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.
CVSS Base Scores
CVSS v3.1(Primary)
7.5CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Enterprise Linux 10 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Enterprise Linux 10 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Enterprise Linux 10 | 109-6.hum1 | — |
| Red Hat | Red Hat Enterprise Linux 8 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Enterprise Linux 8 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Enterprise Linux 8 | 109-6.hum1 | — |
| Red Hat | Red Hat Enterprise Linux 9 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Enterprise Linux 9 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | 109-6.hum1 | — |
| Red Hat | Red Hat Hardened Images | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Hardened Images | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Hardened Images | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Hardened Images | 109-6.hum1 | — |
| Red Hat | Red Hat Enterprise Linux 6 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Enterprise Linux 6 | 109-6.hum1 | — |
| Red Hat | Red Hat Enterprise Linux 7 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat Enterprise Linux 7 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat Enterprise Linux 7 | 109-6.hum1 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:107-7.el10_2 | unaffected |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:049-244.git20260529.el8_10 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:057-115.git20260527.el9_8 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | 109-6.hum1 | — |
Credits
- Red Hat would like to thank AISLE Research for reporting this issue.