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CVE-2026-74410

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer In rtw_pci_rx_napi(), new_len is computed as the sum…

Published Aug 15, 2026EPSS 0.42%

Overview

CVE-2026-74410 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, 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: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer

In rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit

descriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both

firmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478),

causing an out-of-bounds read from the pre-allocated DMA buffer when

skb_put_data copies new_len bytes. The USB transport already validates

this (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the

PCIe path does not.

Add a check that new_len does not exceed the DMA buffer size.

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/01155ded5d4dad61840a9a3c33ab56778ef1f100Refgit.kernel.org/stable/c/08193e733e5d4790e6c937af86d78793b02709beRefgit.kernel.org/stable/c/1554fa522f16ec7c5c342ad33fe734eeb6eb2452Refgit.kernel.org/stable/c/26c183a86ea4dd1f2ff90c6f783649e7f5722a10Refgit.kernel.org/stable/c/45abc14ab3f15da7d689f1a8809c1a01240a94d9Refgit.kernel.org/stable/c/6a3c384393d3f0b41669ed5a2e88744aad9d87c8Refgit.kernel.org/stable/c/6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6Refgit.kernel.org/stable/c/913bd7d3d3d842b5c1d2b908a0201efa8fc79793

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74410?

CVE-2026-74410 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-74410?

This vulnerability has a CVSS 3.1 base score of 8.1, 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-2026-74410?

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-2026-74410?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74410 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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