BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-03-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential null-deref in dm_resume [Why] Fixing smatch error: dm_resume() error: we previously assumed 'aconnector->dc_link' could be null [How] Check if dc_link null at the beginning of the loop, so further checks can be dropped.

CVSS Scores

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Meta Information

Published

2025-10-07

Last Modified

2026-03-17

Generated

2026-07-06

AI Q&A

2025-10-07

EPSS Evaluated

2026-07-05

NVD

CVE-2022-50535

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-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This vulnerability is a potential null pointer dereference in the Linux kernel's AMD display driver (drm/amd/display). Specifically, the function dm_resume assumed that 'aconnector->dc_link' could never be null, which was incorrect. The fix involves checking if 'dc_link' is null at the start of a loop to prevent errors caused by dereferencing a null pointer.

Impact Analysis

If exploited, this vulnerability could cause the Linux kernel to dereference a null pointer, potentially leading to a system crash or denial of service. This could affect system stability and availability, especially on systems using the affected AMD display driver.

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