Segv on unknown address in libjxl: N_SSE4::WriteToU8Stage::ProcessRow

libjxl Updated 02 Oct 2025

Summary

23/04/2022

Disclosed on

N/A

Severity

Yes i

Fix available

Unrated

Severity

Not published

CVSS Score

OSV-2022-367: Segv on unknown address in jxl::N_SSE4::WriteToU8Stage::ProcessRow. Affects libjxl versions >= 239aa089e1025f328f8c4df76483c8d8f20b4f3f, < a3bd8dfcb42a1ba7e77868ea626c07095ac7dc3e. Fixed in a3bd8dfcb42a1ba7e77868ea626c07095ac7dc3e. How to fix ↓

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Background

libjxl is an open-source library for JPEG XL image compression. It provides various functionalities for encoding and decoding images in the JPEG XL format. The library is widely used in applications that require efficient image compression and decompression. However, a vulnerability has been discovered in the library that can lead to a segmentation fault (segv) when processing certain image data.

Vulnerability Detail

The vulnerability in libjxl, specifically in the N_SSE4::WriteToU8Stage::ProcessRow function, can result in a segv on an unknown address. This can occur when the library is rendering a rectangle and processing buffers. The exact cause of the segv is currently unknown. The impact of this vulnerability can range from a denial of service (crash) to potential exploitation of the segv for arbitrary code execution.

How To Fix

Minimum fixed version

a3bd8dfcb42a1ba7e77868ea626c07095ac7dc3e

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 recommended to apply the fix mentioned in the 'how_to_fix' section.

Conclusion

In conclusion, the libjxl library is vulnerable to a segv on an unknown address when processing certain image data. This vulnerability can have various impacts, including crashes and potential code execution. It is crucial to update to the latest version of libjxl that includes the fix to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for libjxl →