CVE-2022-50842
Unknown Unknown - Not Provided
Null Pointer Dereference in Linux drm/virtio 2D BO Handling

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Check whether transferred 2D BO is shmem Transferred 2D BO always must be a shmem BO. Add check for that to prevent NULL dereference if userspace passes a VRAM BO.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50842
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's drm/virtio component occurs because there was no check to ensure that a transferred 2D buffer object (BO) is a shared memory (shmem) BO. If userspace passes a VRAM BO instead, it can cause a NULL pointer dereference, potentially leading to a crash or other unintended behavior. The fix adds a check to verify that the transferred 2D BO is indeed a shmem BO to prevent this issue.

Impact Analysis

This vulnerability can cause a NULL pointer dereference in the Linux kernel when a VRAM BO is passed instead of a shmem BO, which may lead to system crashes or instability. This could affect the reliability and availability of systems running the vulnerable kernel.

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