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CVE-2024-38630

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger When the cpu5wdt module is removing, the origin code uses…

Published Jun 21, 2024CWE-416EPSS 0.25%

Overview

CVE-2024-38630 is a high-severity vulnerability. It was published on June 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:

watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger

When the cpu5wdt module is removing, the origin code uses del_timer() to

de-activate the timer. If the timer handler is running, del_timer() could

not stop it and will return directly. If the port region is released by

release_region() and then the timer handler cpu5wdt_trigger() calls outb()

to write into the region that is released, the use-after-free bug will

happen.

Change del_timer() to timer_shutdown_sync() in order that the timer handler

could be finished before the port region is released.

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/573601521277119f2e2ba5f28ae6e87fc594f4d4Refgit.kernel.org/stable/c/9b1c063ffc075abf56f63e55d70b9778ff534314Refgit.kernel.org/stable/c/f19686d616500cd0d47b30cee82392b53f7f784aRefgit.kernel.org/stable/c/573601521277119f2e2ba5f28ae6e87fc594f4d4Refgit.kernel.org/stable/c/9b1c063ffc075abf56f63e55d70b9778ff534314Refgit.kernel.org/stable/c/f19686d616500cd0d47b30cee82392b53f7f784a

How CyberStrike helps

Frequently asked questions

What is CVE-2024-38630?

CVE-2024-38630 is a high-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-38630?

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-2024-38630?

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-2024-38630?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-38630 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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