CVE-2026-43498

Analyzed Analyzed - Analysis Complete

ivpu GEM Buffer Re-exportation Vulnerability

Publication date: 2026-05-21

Last updated on: 2026-06-26

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Disallow re-exporting imported GEM objects Prevent re-exporting of imported GEM buffers by adding a custom prime_handle_to_fd callback that checks if the object is imported and returns -EOPNOTSUPP if so. Re-exporting imported GEM buffers causes loss of buffer flags settings, leading to incorrect device access and data corruption.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-21

Last Modified

2026-06-26

Generated

2026-07-07

AI Q&A

2026-05-21

EPSS Evaluated

2026-07-06

NVD

CVE-2026-43498

EUVD

EUVD-2026-31272

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	From 6.19 (inc) to 7.0.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel's accel/ivpu component. It involves the re-exporting of imported GEM (Graphics Execution Manager) buffers, which was previously allowed.

The issue arises because re-exporting imported GEM buffers causes loss of buffer flags settings. This can lead to incorrect device access and data corruption.

The vulnerability was resolved by disallowing the re-exporting of imported GEM objects through a custom prime_handle_to_fd callback that checks if the object is imported and returns an error (-EOPNOTSUPP) if so.

Impact Analysis

If exploited, this vulnerability can cause loss of buffer flags settings in the Linux kernel's graphics subsystem.

This loss can lead to incorrect device access, which might cause devices to behave unexpectedly or insecurely.

Additionally, it can result in data corruption, potentially affecting the integrity of data processed or displayed by the device.

Mitigation Strategies

The vulnerability has been resolved in the Linux kernel by disallowing the re-exporting of imported GEM buffers through a custom prime_handle_to_fd callback.

To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.

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