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CVE-2024-56764

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inf…

Published Jan 6, 2025CWE-416EPSS 0.20%

Overview

CVE-2024-56764 is a high-severity vulnerability. It was published on January 6, 2025 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:

ublk: detach gendisk from ublk device if add_disk() fails

Inside ublk_abort_requests(), gendisk is grabbed for aborting all

inflight requests. And ublk_abort_requests() is called when exiting

the uring context or handling timeout.

If add_disk() fails, the gendisk may have been freed when calling

ublk_abort_requests(), so use-after-free can be caused when getting

disk's reference in ublk_abort_requests().

Fixes the bug by detaching gendisk from ublk device if add_disk() fails.

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/75cd4005da5492129917a4a4ee45e81660556104Refgit.kernel.org/stable/c/7d680f2f76a3417fdfc3946da7471e81464f7b41

How CyberStrike helps

Frequently asked questions

What is CVE-2024-56764?

CVE-2024-56764 is a high-severity vulnerability. It was published on January 6, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-56764?

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-2024-56764?

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-2024-56764?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-56764 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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