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CVE-2024-43881

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: change DMA direction while mapping reinjected packets For fragmented packets, ath12k reassembles each fragment as…

Published Aug 21, 2024CWE-668EPSS 0.31%

Overview

CVE-2024-43881 is a high-severity vulnerability. It was published on August 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: change DMA direction while mapping reinjected packets

For fragmented packets, ath12k reassembles each fragment as a normal

packet and then reinjects it into HW ring. In this case, the DMA

direction should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise,

an invalid payload may be reinjected into the HW and

subsequently delivered to the host.

Given that arbitrary memory can be allocated to the skb buffer,

knowledge about the data contained in the reinjected buffer is lacking.

Consequently, there’s a risk of private information being leaked.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1

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/33322e3ef07409278a18c6919c448e369d66a18eRefgit.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3bRefgit.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997

How CyberStrike helps

Frequently asked questions

What is CVE-2024-43881?

CVE-2024-43881 is a high-severity vulnerability. It was published on August 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-43881?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-43881?

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-2024-43881?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-43881 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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