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CVE-2024-41085

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: cxl/mem: Fix no cxl_nvd during pmem region auto-assembling When CXL subsystem is auto-assembling a pmem region during cxl endpo…

Published Jul 29, 2024CWE-476EPSS 0.24%

Overview

CVE-2024-41085 is a medium-severity vulnerability. It was published on July 29, 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:

cxl/mem: Fix no cxl_nvd during pmem region auto-assembling

When CXL subsystem is auto-assembling a pmem region during cxl

endpoint port probing, always hit below calltrace.

BUG: kernel NULL pointer dereference, address: 0000000000000078

#PF: supervisor read access in kernel mode

#PF: error_code(0x0000) - not-present page

RIP: 0010:cxl_pmem_region_probe+0x22e/0x360 [cxl_pmem]

Call Trace:

<TASK>

? __die+0x24/0x70

? page_fault_oops+0x82/0x160

? do_user_addr_fault+0x65/0x6b0

? exc_page_fault+0x7d/0x170

? asm_exc_page_fault+0x26/0x30

? cxl_pmem_region_probe+0x22e/0x360 [cxl_pmem]

? cxl_pmem_region_probe+0x1ac/0x360 [cxl_pmem]

cxl_bus_probe+0x1b/0x60 [cxl_core]

really_probe+0x173/0x410

? __pfx___device_attach_driver+0x10/0x10

__driver_probe_device+0x80/0x170

driver_probe_device+0x1e/0x90

__device_attach_driver+0x90/0x120

bus_for_each_drv+0x84/0xe0

__device_attach+0xbc/0x1f0

bus_probe

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/1d064e4fbebcf5b18dc10c1f3973487eb163b600Refgit.kernel.org/stable/c/84ec985944ef34a34a1605b93ce401aa8737af96Refgit.kernel.org/stable/c/1d064e4fbebcf5b18dc10c1f3973487eb163b600Refgit.kernel.org/stable/c/84ec985944ef34a34a1605b93ce401aa8737af96

How CyberStrike helps

Frequently asked questions

What is CVE-2024-41085?

CVE-2024-41085 is a medium-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-41085?

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-2024-41085?

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-2024-41085?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-41085 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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