BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-10-02

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate the box size for the snooped cursor Invalid userspace dma surface copies could potentially overflow the memcpy from the surface to the snooped image leading to crashes. To fix it the dimensions of the copybox have to be validated against the expected size of the snooped cursor.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-01

Last Modified

2025-10-02

Generated

2026-07-06

AI Q&A

2025-10-01

EPSS Evaluated

2026-07-05

NVD

CVE-2022-50440

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 5.15.160 (inc) to 5.16 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel's drm/vmwgfx component involves improper validation of the box size used for copying a snooped cursor image. Specifically, invalid userspace DMA surface copies could overflow the memcpy operation from the surface to the snooped image, potentially causing crashes. The fix involves validating the dimensions of the copy box against the expected size of the snooped cursor to prevent overflow.

Impact Analysis

This vulnerability can lead to crashes in the Linux kernel due to buffer overflow during the copying of the snooped cursor image. Such crashes could cause system instability or denial of service, impacting the reliability of systems using the affected drm/vmwgfx component.

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