** Information type changed from Public Security to Public -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xz-utils in Ubuntu. https://bugs.launchpad.net/bugs/1970762
Title: liblzma failed to decompress a valid lzma file Status in xz-utils package in Ubuntu: New Bug description: The lzma file can be accessed here: https://kwafoo.coe.neu.edu/~fangq/share/temp/mat.lzma This file was created using the public domain lzma C library written by Igor Pavlov. It can be decompressed on Ubuntu 20.04 using `lzma -d`, based on LZMA SDK 9.22, but on either Ubuntu 18.04 and 22.04, where lzma is built based on liblzma, it gives a "Compressed data is corrupted" error. here is the log on Ubuntu 20.04 - where LZMA SDK based lzma works ``` fangq@ubuntu20_04:~$ lzma --version LZMA command line tool 9.22 LZMA SDK 9.22 fangq@ubuntu20_04:~$ lzma -v -d mat.lzma mat.lzma: 21.83% -- replaced with mat ``` however, on Ubuntu 22.04, lzma -d does not work (same for 18.04) ``` fangq@ubuntu18_04:~$ lzma --version xz (XZ Utils) 5.2.5 liblzma 5.2.5 fangq@ubuntu22_04$ lzma -v -d mat.lzma mat.lzma (1/1) 99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782 lzma: mat.lzma: Compressed data is corrupt 99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782 ``` Because of this, I also noticed that the official lzma module of Python fails to decompress this file. I want to add that using `lzma` or `lzma-purejs` npm module, node.js script can correctly decompress this file. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xz-utils/+bug/1970762/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
