PT-2026-61264 · Linux · Linux

CVE-2026-63947 · Published 2026-07-19 · Updated 2026-07-19

NVD

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

CVE-2026-63947

Affected Products

Linux

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-63947 · Security Note
• https://git.kernel.org/stable/c/d7d6a81b8dd1a8d084a1b755db9406041d53adb5 · Note
• https://git.kernel.org/stable/c/cc3832b19f863e3677c5651f001a2e3795f39eb8 · Note
• https://git.kernel.org/stable/c/6348dfed5b0f9c6074f14322332e97493d32fef0 · Note
• https://git.kernel.org/stable/c/b83dcacd2ec7fcc5a48be215f82d573759f87ec2 · Note
• https://git.kernel.org/stable/c/d313683d6ccdd8c01e0562270a2ae25b86d8461d · Note
• https://git.kernel.org/stable/c/2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6 · Note
• https://git.kernel.org/stable/c/1f08a90013e1e632b34321334e861fcefc056505 · Note