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CVE-2024-38575

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: pcie: handle randbuf allocation failure The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the…

Published Jun 19, 2024CWE-476EPSS 0.22%

Overview

CVE-2024-38575 is a medium-severity vulnerability. It was published on June 19, 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:

wifi: brcmfmac: pcie: handle randbuf allocation failure

The kzalloc() in brcmf_pcie_download_fw_nvram() will return null

if the physical memory has run out. As a result, if we use

get_random_bytes() to generate random bytes in the randbuf, the

null pointer dereference bug will happen.

In order to prevent allocation failure, this patch adds a separate

function using buffer on kernel stack to generate random bytes in

the randbuf, which could prevent the kernel stack from overflow.

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/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49Refgit.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4cRefgit.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720Refgit.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88Refgit.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3bRefgit.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49Refgit.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4cRefgit.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720Refgit.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88Refgit.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3b

How CyberStrike helps

Frequently asked questions

What is CVE-2024-38575?

CVE-2024-38575 is a medium-severity vulnerability. It was published on June 19, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-38575?

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-2024-38575?

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-2024-38575?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-38575 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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