[Bug 1893170] [NEW] [Ubuntu 20.10] zlib: DFLTCC compression level switching issues

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

Description:   zlib: DFLTCC compression level switching issues
Symptom:       Switching compression levels corrupts data
Problem:       Hardware and software compression states become desynchronized.
Solution:      Improve compression state synchronization. Since zlib project
               does not accept patches at the moment, the fix has been
               integrated into the DFLTCC pull request:
               https://github.com/madler/zlib/pull/410
               The commitid is 992a7afc3edfa511dff0650d1c545b11bf64e655.
Reproduction:  Not possible with popular command line tools. The issues were
               discovered using example_call_fuzzer from:
               https://github.com/iii-i/zlib-ng/tree/fuzz/test/fuzz/

This needs also be applied against 20.04 !

** Affects: zlib (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bugnameltc-187859 severity-high targetmilestone-inin2010
-- 
[Ubuntu 20.10] zlib: DFLTCC compression level switching issues
https://bugs.launchpad.net/bugs/1893170
You received this bug notification because you are a member of Ubuntu Foundations Bugs, which is subscribed to zlib in Ubuntu.