CVE-2026-98206
kernel: Input: cyttsp5 - clamp the HID report size before memcpy
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 6, 2026
Updated · October 9, 2026
Description
A flaw was found in the Linux kernel's Cypress Generation 5 touchscreen (cyttsp5) driver. This vulnerability can lead to a Denial of Service (DoS) due to memory corruption because the driver does not properly validate the size of incoming data reports before copying them into a fixed-size buffer. A physically present attacker connecting a crafted or compromised touchscreen device could supply an oversized report length, triggering a buffer overflow that causes a system crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')