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On the recordRead 8 Oct 202621 facts
XZ Utils
On the record
- Bindings
- The project lists bindings for Python, Perl, Haskell, Delphi, and Free Pascal.tukaani.org · read 8 Oct 2026
- Components
- It includes the liblzma compression library, the xz command line tool, the decompression-only xzdec tool, and shell scripts for viewing, searching, and comparing compressed files.tukaani.org · read 8 Oct 2026
- Compression library
- liblzma provides a general-purpose compression API similar to zlib and supports .xz, .lzma, and raw streams.tukaani.org · read 8 Oct 2026
- Current release
- The site lists XZ Utils 5.8.3, released 2026-03-31, and says it fixes a minor security issue affecting all stable releases.tukaani.org · read 8 Oct 2026
- File format
- The .xz format supports streaming, limited random access, chained filters, integrity checks, concatenation, and padding; it does not provide archiving capabilities.tukaani.org · read 8 Oct 2026
- Format features
- The .xz format supports streaming, limited random-access reading, filter chaining, integrity checks, concatenation, and padding.tukaani.org · read 8 Oct 2026
- Format limitation
- The .xz format is a container for compressed streams and has no archiving capability; each stream holds a single file.tukaani.org · read 8 Oct 2026
- Intended users
- The project describes XZ Embedded as a small .xz decompressor developed with the Linux kernel in mind and usable in other projects.tukaani.org · read 8 Oct 2026
- License
- Core components from version 5.5.2beta onward use the BSD Zero Clause License (0BSD), while some scripts and build files use other free software licenses.tukaani.org · read 8 Oct 2026
- Licensing
- Since version 5.5.2beta, core components use the BSD Zero Clause License; some other parts use licenses including LGPLv2.1, GPLv2, or GPLv3.tukaani.org · read 8 Oct 2026
- Maintenance
- The v5.8 stable branch is maintained; v5.6, v5.4, and v5.2 receive critical fixes only, and v5.0 is unmaintained.tukaani.org · read 8 Oct 2026
- Purpose
- XZ Utils is a C99 implementation of the .xz file format.tukaani.org · read 8 Oct 2026
- Security
- The security page reports a buffer overflow affecting XZ Utils 5.8.2 and older, under conditions the project says likely do not occur in real-world applications.tukaani.org · read 8 Oct 2026
- Security incident
- The site reports that XZ Utils 5.6.0 and 5.6.1 release tarballs contained a backdoor inserted by a malicious co-maintainer, disclosed on 2024-03-29 as CVE-2024-3094.tukaani.org · read 8 Oct 2026
- Security reporting
- The project asks people to report security issues privately by email, encrypted if possible, or through GitHub's vulnerability reporting feature.tukaani.org · read 8 Oct 2026
- Support
- The project accepts bug reports through GitHub, email, or IRC, and asks that security issues be reported privately by email or through GitHub's vulnerability reporting feature.tukaani.org · read 8 Oct 2026
- Supported formats
- The tools support the .xz format and the legacy .lzma format.github.com · read 8 Oct 2026
- Supported platforms
- The project lists GNU/Linux, macOS, Windows, and numerous other operating systems as supported platforms.tukaani.org · read 8 Oct 2026
