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Package "xzdec"

Name: xzdec

Description:

XZ-format compression utilities - tiny decompressors
Latest version: 5.2.5-2ubuntu1.2
Release: jammy (22.04)
Level: security
Repository: universe
Head package: xz-utils
Homepage: https://tukaani.org/xz/

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Repository Area Version
base universe 5.2.5-2ubuntu1
updates universe 5.2.5-2ubuntu1.1

Changelog

Version: 5.2.5-2ubuntu1.2 2026-10-20 17:07:40 UTC

xz-utils (5.2.5-2ubuntu1.2) jammy-security; urgency=medium

  * SECURITY UPDATE: invalid memory write during decoder reinitialization
    after allocation failure (LP: #2170056)
    - debian/patches/LP-2170056_1.patch: Make lzma_lz_decoder_init()
      safe to reinit after alloc failure in src/liblzma/lz/lz_decoder.c.
    - debian/patches/LP-2170056_2.patch: Clean up after a filter chain
      initialization error in src/liblzma/common/alone_decoder.c.
    - debian/patches/LP-2170056_3.patch: Test lzma_alone_decoder() reuse
      after dictionary allocation failure in tests/Makefile.am,
      tests/test_alone_decoder.c.
    - No CVE number

 -- Shafayat Hossain Majumder Fri, 09 Oct 2026 11:54:08 -0400
Source diff to previous version
2170056 5.8.4 security tracking bug

Version: 5.2.5-2ubuntu1.1 2026-06-02 10:07:44 UTC

  xz-utils (5.2.5-2ubuntu1.1) jammy-security; urgency=medium

  * SECURITY UPDATE: heap buffer overflow
    - debian/patches/CVE-2026-34743.patch: adds a check to
      lzma_index_prealloc() to default to a safe size when decoding empty
      indexes in src/liblzma/common/index.c.
    - CVE-2026-34743

 -- Ian Constantin <email address hidden> Thu, 28 May 2026 19:06:40 +0300
CVE-2026-34743 XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to deco


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