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CVE-2024-36893

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: Check for port partner validity before consuming it typec_register_partner() does not guarantee partner regis…

Published May 30, 2024CWE-476EPSS 0.23%

Overview

CVE-2024-36893 is a medium-severity vulnerability. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

usb: typec: tcpm: Check for port partner validity before consuming it

typec_register_partner() does not guarantee partner registration

to always succeed. In the event of failure, port->partner is set

to the error value or NULL. Given that port->partner validity is

not checked, this results in the following crash:

Unable to handle kernel NULL pointer dereference at virtual address xx

pc : run_state_machine+0x1bc8/0x1c08

lr : run_state_machine+0x1b90/0x1c08

..

Call trace:

run_state_machine+0x1bc8/0x1c08

tcpm_state_machine_work+0x94/0xe4

kthread_worker_fn+0x118/0x328

kthread+0x1d0/0x23c

ret_from_fork+0x10/0x20

To prevent the crash, check for port->partner validity before

derefencing it in all the call sites.

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/2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5Refgit.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637Refgit.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249ddRefgit.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57Refgit.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77Refgit.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637Refgit.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249ddRefgit.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57Refgit.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77

How CyberStrike helps

Frequently asked questions

What is CVE-2024-36893?

CVE-2024-36893 is a medium-severity vulnerability. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36893?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-36893?

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-2024-36893?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-36893 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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