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Vulnerability record · CVE-2026-43051 · published 1 May 2026

CVE-2026-43051: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq The wacom_intuos_bt_irq() function processes Bluetooth HID reports without sufficient bounds checking. A maliciously crafted short report can trigger an out-of-bounds read when copying data into the wacom structure. Specifically, report 0x03 requires at least 22 bytes to safely read the processed data and battery status, while report 0x04 (which falls through to 0x03) requires 32 bytes. Add explicit length checks for these report IDs and log a warning if a short report is received.

8.1 CVSS 3.1 High EPSS 0.42% · top 66.3% CWE-125 · Out-of-bounds read
8.1CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq The wacom_intuos_bt_irq() function processes Bluetooth HID reports without sufficient bounds checking. A maliciously crafted short report can trigger an out-of-bounds read when copying data into the wacom structure. Specifically, report 0x03 requires at least 22 bytes to safely read the processed data and battery status, while report 0x04 (which falls through to 0x03) requires 32 bytes. Add explicit length checks for these report IDs and log a warning if a short report is received.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/2f1763f62909ccb6386ac50350fa0abbf5bb16a9 Patch
https://git.kernel.org/stable/c/3d78386b144453c47e81bf62dc3601b757f02d99 Patch
https://git.kernel.org/stable/c/41026bcc0fdf82605205c27935ef719cbc07193b Patch
https://git.kernel.org/stable/c/5b5b9730111808410e404ceac2fabd32eef92fbd Patch
https://git.kernel.org/stable/c/8bd690ac1242332c73cba10dacdad6c6642bbb94 Patch
https://git.kernel.org/stable/c/c8dc23c97680eebefde06da5858aaef1b37cf75d Patch
https://git.kernel.org/stable/c/d0ae84b3c9f3ea1a564eb1b7612113ca9fe8aada Patch
https://git.kernel.org/stable/c/fa8901cb1f0b2113a342db93bd5684b59fe99dcf Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43051), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.