CVE-2026-63943

Last refreshed2026-10-30

Status: UPDATED | Advisory ID: CVE-2026-63943

Key Details

CVE	CVE-2026-63943
CVSS Score / Version	7.1 (High) / CVSS v3.1
Updated	2026-10-30
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-125 (Out-of-bounds Read)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

Input: xpad - fix out-of-bounds access for Share button

xpadone_process_packet() receives len directly from urb->actual_length

and uses it to index the share-button byte at data[len - 18] or

data[len - 26]. Since both len and data[0] are under the device's

control, a broken controller can send a GIP_CMD_INPUT packet with

actual_length < 18 (e.g. 5 bytes) and reach this code path, causing

accesses beyond the actual array.

Fix this by calculating the offset and checking bounds against the

packet length. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-63943
CVE	https://www.cve.org/CVERecord?id=CVE-2026-63943

Source

Reference

NVD

CVE