REDHAT-BUG-2357249: Use After Free
XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzmastreamdecodermt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2357249?
The severity of REDHAT-BUG-2357249 is considered significant due to potential crashes and memory corruption.
How do I fix REDHAT-BUG-2357249?
To fix REDHAT-BUG-2357249, upgrade to a version of XZ Utils that is higher than 5.8.0.
What versions of XZ Utils are affected by REDHAT-BUG-2357249?
XZ Utils versions from 5.3.3alpha up to 5.8.0 are affected by REDHAT-BUG-2357249.
What type of issue is REDHAT-BUG-2357249 related to?
REDHAT-BUG-2357249 is related to a security vulnerability in the multithreaded .xz decoder of XZ Utils.
Can REDHAT-BUG-2357249 lead to data loss?
Yes, REDHAT-BUG-2357249 can potentially lead to data loss due to memory corruption errors.