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CVE-2024-27007

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE Commit d7a08838ab74 ("mm: userfaultfd: fix unexpected…

Published May 1, 2024EPSS 0.24%

Overview

CVE-2024-27007 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE

Commit d7a08838ab74 ("mm: userfaultfd: fix unexpected change to src_folio

when UFFDIO_MOVE fails") moved the src_folio->{mapping, index} changing to

after clearing the page-table and ensuring that it's not pinned. This

avoids failure of swapout+migration and possibly memory corruption.

However, the commit missed fixing it in the huge-page case.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50Refgit.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebeRefgit.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50Refgit.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebeReflists.fedoraproject.org/archives/list/[email protected]/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/Reflists.fedoraproject.org/archives/list/[email protected]/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/Reflists.fedoraproject.org/archives/list/[email protected]/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27007?

CVE-2024-27007 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-27007?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-27007?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-27007?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27007 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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