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CVE-2026-63947

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: fix missing length checks in hidp_input_report() hidp_input_report() reads keyboard and mouse payload data fro…

Published Jul 19, 2026EPSS 0.35%

Overview

CVE-2026-63947 is a high-severity vulnerability. It was published on July 19, 2026 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:

Bluetooth: HIDP: fix missing length checks in hidp_input_report()

hidp_input_report() reads keyboard and mouse payload data from an skb

without first verifying that skb->len contains enough data.

hidp_recv_intr_frame() pulls the 1-byte HIDP header before dispatching

to hidp_input_report(). If a paired device sends a truncated packet,

the handler reads beyond the valid skb data, resulting in an

out-of-bounds read of skb data. The OOB bytes may be interpreted as

phantom key presses or spurious mouse movement.

Replace the open-coded length tracking and pointer arithmetic with

skb_pull_data() calls. skb_pull_data() returns NULL if the requested

bytes are not present, eliminating the need for a manual size variable

and the separate skb->len guard.

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/1f08a90013e1e632b34321334e861fcefc056505Refgit.kernel.org/stable/c/2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6Refgit.kernel.org/stable/c/6348dfed5b0f9c6074f14322332e97493d32fef0Refgit.kernel.org/stable/c/b83dcacd2ec7fcc5a48be215f82d573759f87ec2Refgit.kernel.org/stable/c/cc3832b19f863e3677c5651f001a2e3795f39eb8Refgit.kernel.org/stable/c/d313683d6ccdd8c01e0562270a2ae25b86d8461dRefgit.kernel.org/stable/c/d7d6a81b8dd1a8d084a1b755db9406041d53adb5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63947?

CVE-2026-63947 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-63947?

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-2026-63947?

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-2026-63947?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63947 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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