Linux Kernel Lockdown Vulnerability in Fedora by Red Hat
CVE-2025-1272

7.7HIGH

Key Information:

Vendor

Fedora Project

Status
Fedora Linux
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Vendor
CVE Published:
18 February 2026

What is CVE-2025-1272?

The lockdown mode in Fedora Linux for kernel versions 6.12 and newer is improperly disabled, exposing the system to significant security risks. This flaw enables potential attackers to access sensitive system information, such as kernel memory mappings, I/O ports, and BPF and kprobes, without any alerts. Moreover, it facilitates the loading of unsigned modules, allowing for the execution of untrusted code and undermining any existing Secure Boot protections. This vulnerability specifically impacts Fedora Linux, emphasizing the need for immediate remediation.

Affected Version(s)

Fedora Linux 6.12.4-100.fc40 < 6.12.15-100.fc40

Fedora Linux 6.12.1-200.fc41 < 6.12.15-200.fc41

Red Hat Enterprise Linux 9 0:5.14.0-570.12.1.el9_6

References

https://access.redhat.com/errata/RHSA-2025:6966
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-1272
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2345615
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Nicolas Bouchinet (ANSSI – French Cybersecurity Agency) for reporting this issue.
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