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CVE-2022-48735

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix UAF of leds class devs at unbinding The LED class devices that are created by HD-audio codec drivers are registe…

Published Jun 20, 2024CWE-416EPSS 0.23%

Overview

CVE-2022-48735 is a high-severity vulnerability. It was published on June 20, 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:

ALSA: hda: Fix UAF of leds class devs at unbinding

The LED class devices that are created by HD-audio codec drivers are

registered via devm_led_classdev_register() and associated with the

HD-audio codec device. Unfortunately, it turned out that the devres

release doesn't work for this case; namely, since the codec resource

release happens before the devm call chain, it triggers a NULL

dereference or a UAF for a stale set_brightness_delay callback.

For fixing the bug, this patch changes the LED class device register

and unregister in a manual manner without devres, keeping the

instances in hda_gen_spec.

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/0e629052f013eeb61494d4df2f1f647c2a9aef47Refgit.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87bRefgit.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8Refgit.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5Refgit.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47Refgit.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87bRefgit.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8Refgit.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48735?

CVE-2022-48735 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48735?

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-2022-48735?

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-2022-48735?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48735 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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