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CVE-2026-74648

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: validate monitor transmit frame lengths rtw_cfg80211_monitor_if_xmit_entry() removes the radiotap header an…

Published Aug 22, 2026EPSS 0.13%

Overview

CVE-2026-74648 is a high-severity vulnerability. It was published on August 22, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

staging: rtl8723bs: validate monitor transmit frame lengths

rtw_cfg80211_monitor_if_xmit_entry() removes the radiotap header and

then reads the 802.11 frame control field without checking that a base

802.11 header remains.

The data path also pulls the calculated 802.11, QoS and SNAP header

span before confirming that the skb contains it. A truncated frame can

therefore cause out-of-bounds reads or leave insufficient data for the

Ethernet address writes.

Reject frames that do not contain the base 802.11 header and data

frames that do not contain their complete calculated header span.

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/6829665d050983907b560173e49dcc6c11cb2730Refgit.kernel.org/stable/c/7b0f62d2986a28e5e4188366bc2f4e2868b14790Refgit.kernel.org/stable/c/7edd3adb0c80d70b4237640275c559610f438476Refgit.kernel.org/stable/c/8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1Refgit.kernel.org/stable/c/a3ac6d849de5f7abe14761d741bbb843ac793454Refgit.kernel.org/stable/c/bd88f6289b7e483216a9c1df15a0460ef9b02cb6Refgit.kernel.org/stable/c/c5e5d78743992e235b76d2ebe5a403d60315aa8aRefgit.kernel.org/stable/c/f03398d835f5249c49546f0eb0d0df6792b95d5f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74648?

CVE-2026-74648 is a high-severity vulnerability. It was published on August 22, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-74648?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-74648?

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-2026-74648?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74648 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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