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CVE-2024-49876

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: drm/xe: fix UAF around queue destruction We currently do stuff like queuing the final destruction step on a random system wq, w…

Published Oct 21, 2024CWE-416EPSS 0.24%

Overview

CVE-2024-49876 is a high-severity vulnerability. It was published on October 21, 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:

drm/xe: fix UAF around queue destruction

We currently do stuff like queuing the final destruction step on a

random system wq, which will outlive the driver instance. With bad

timing we can teardown the driver with one or more work workqueue still

being alive leading to various UAF splats. Add a fini step to ensure

user queues are properly torn down. At this point GuC should already be

nuked so queue itself should no longer be referenced from hw pov.

v2 (Matt B)

- Looks much safer to use a waitqueue and then just wait for the

xa_array to become empty before triggering the drain.

(cherry picked from commit 861108666cc0e999cffeab6aff17b662e68774e3)

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/272b0e78874586d6ccae04079d75b27b47705544Refgit.kernel.org/stable/c/2d2be279f1ca9e7288282d4214f16eea8a727cdbRefgit.kernel.org/stable/c/421c74670b0f9d5c007f1276d3647aa58f407fde

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49876?

CVE-2024-49876 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-49876?

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-2024-49876?

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-2024-49876?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49876 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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