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/amdgpu: Fix size validation for non-exclusive domains (v4) Fix amdgpu_bo_validate_size() to check whether the TTM domain manager for the requested memory exists, else we get a kernel oops when dereferencing "man". v2: Make the patch standalone, i.e. not dependent on local patches. v3: Preserve old behaviour and just check that the manager pointer is not NULL. v4: Complain if GTT domain requested and it is uninitialized--most likely a bug.

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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-2022-50527

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.1 (inc) to 6.1.5 (inc)
linux	kernel	*

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 in the Linux kernel's amdgpu driver, specifically in the drm/amdgpu component. It involves improper size validation in the function amdgpu_bo_validate_size() when handling non-exclusive memory domains. The issue occurs because the function does not properly check if the TTM domain manager for the requested memory exists, which can lead to a kernel oops (crash) when dereferencing a null pointer. The fix involves adding checks to ensure the manager pointer is not NULL and handling uninitialized GTT domains properly.

Impact Analysis

This vulnerability can cause the Linux kernel to crash (kernel oops) when the amdgpu driver attempts to validate memory sizes without proper checks. This can lead to system instability or denial of service on affected systems using the amdgpu driver.

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