SEPTEMBER 8, 2026
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Case File

CVE-2026-63956

UNKNOWN · CVSS N/A EPSS 0.21%

Source: NVD + CISA KEV + EPSS · Published 2026-07-19 · Last synced 2026-08-18

CyberRota Analysis

AI-Generated

A memory corruption vulnerability exists in the Linux kernel's USB serial driver for Cypress M8 devices, where a malicious device could report a smaller interrupt-out endpoint max packet size, leading to potential user-controlled slab corruption or NULL-pointer dereference. This issue poses a risk to systems utilizing affected Linux distributions with connected Cypress M8 USB devices. Administrators and security teams managing Linux environments should prioritize this vulnerability to mitigate potential exploitation risks.

CVE
CVE-2026-63956
Severity
UNKNOWN
CVSS
N/A
EPSS
0.21%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: cypress_m8: fix memory corruption with small endpoint Make sure that the interrupt-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption or NULL-pointer dereference should a malicious device report a smaller size.