Heap-buffer-overflow in Gfx::decode_bmp_pixel_data in SerenityOS

serenity Updated 02 Oct 2025

Summary

30/09/2023

Disclosed on

MEDIUM

Severity

Yes i

Fix available

Medium

Severity

Not published

CVSS Score

OSV-2023-936: Heap-buffer-overflow in Gfx::decode_bmp_pixel_data. Affects serenity versions >= a52089452226ce7327c5557ae10b8450b9cc2fee, < fd157b9a711dfd908392b2ddbaf13cb0ef292886. Fixed in fd157b9a711dfd908392b2ddbaf13cb0ef292886. How to fix ↓

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Background

SerenityOS is an open-source operating system that aims to provide a modern and user-friendly interface. It offers various functionalities and features, including support for image decoding. However, a vulnerability has been discovered in the Gfx::decode_bmp_pixel_data function, which is used for decoding BMP image data. This vulnerability can lead to a heap-buffer-overflow when reading data, potentially resulting in a crash or arbitrary code execution.

Vulnerability Detail

The vulnerability originates from a heap-buffer-overflow in the Gfx::decode_bmp_pixel_data function of SerenityOS. When processing BMP image data, the function fails to properly validate the input, leading to a buffer overflow. This can be exploited by an attacker to overwrite adjacent memory and potentially execute arbitrary code or cause a denial-of-service condition. The issue has been reported in the OSS-Fuzz project, and more details can be found in the provided link.

How To Fix

Minimum fixed version

fd157b9a711dfd908392b2ddbaf13cb0ef292886

This is the first release that contains the fix.

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Workaround

At the moment, there is no known workaround for this vulnerability. It is crucial to update the SerenityOS package to a patched version as soon as possible.

Conclusion

In conclusion, a heap-buffer-overflow vulnerability has been discovered in the Gfx::decode_bmp_pixel_data function of SerenityOS. This vulnerability can be mitigated by updating the SerenityOS package to a version that includes the fix. It is important to apply the patch as soon as possible to prevent potential crashes or arbitrary code execution. For further support on vulnerability remediation, please contact DevNack.com.

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