Check failed in CheckUnwind in libvpx

libvpx Updated 02 Oct 2025

Summary

05/07/2022
N/A
Yes i
Unrated
Not published

OSV-2022-533: Check failed in CheckUnwind. Affects libvpx versions >= 5b530fc962bcb8a51bbf03f5fbc2912f21b86e70, < 933b6b90a583b593efd8acb644603ab189226309. Fixed in 933b6b90a583b593efd8acb644603ab189226309. How to fix ↓

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Background

libvpx is an open-source library for encoding and decoding video streams. It is widely used in various applications and platforms to handle video compression and decompression. This vulnerability affects the libvpx package and can potentially lead to a crash or other unexpected behavior in applications that utilize this library.

Vulnerability Detail

The vulnerability, identified as OSV-2022-533, originates from a check failure in the CheckUnwind function of libvpx. This issue was discovered through the OSS-Fuzz project, and the specific crash state involves the vp9_loop_filter_dealloc and vp9_decoder_remove functions. The impact of this vulnerability can vary depending on the context in which libvpx is used, but it may result in denial of service, information disclosure, or the execution of arbitrary code.

How To Fix

Minimum fixed version

933b6b90a583b593efd8acb644603ab189226309

This is the first release that contains the fix.

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

Workaround

At the moment, there is no known workaround for this vulnerability. It is crucial to apply the fix provided by the libvpx project to address the issue effectively.

Conclusion

In conclusion, the CheckUnwind vulnerability in libvpx can lead to crashes or other unexpected behavior in applications that use this library. It is crucial to update to a fixed version of libvpx to mitigate the risk. For further support and assistance with vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for libvpx →

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FAQ

libvpx is an open-source library used for video encoding and decoding.

The impact can vary, but it may lead to crashes, information disclosure, or arbitrary code execution.

This vulnerability was discovered through the OSS-Fuzz project.

No, there is currently no known workaround. Applying the provided fix is recommended.

The fix can be found in commit 933b6b90a583b593efd8acb644603ab189226309 of the libvpx repository.

Related vulnerabilities

Recent vulnerabilities recorded for libvpx.

How To Fix

Minimum fixed version

933b6b90a583b593efd8acb644603ab189226309

This is the first release that contains the fix.

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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