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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
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[Ubuntu 20.10] zlib: DFLTCC compression level switching issues
https://bugs.launchpad.net/bugs/1893170
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