SUSE-RU-2020:3792-1: moderate: Recommended update for gzip

[sle-updates at lists.suse.com]

   SUSE Recommended Update: Recommended update for gzip
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Announcement ID:    SUSE-RU-2020:3792-1
Rating:             moderate
References:         #1145276 ECO-2217 SLE-12974 SLE-13775 SLE-5818 
                    SLE-8914 
Affected Products:
                    SUSE Linux Enterprise Module for Basesystem 15-SP1
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   An update that has one recommended fix and contains 5
   features can now be installed.

Description:

   This update for gzip fixes the following issues:

   Update from version 1.9 to version 1.10 (jsc#ECO-2217, jsc#SLE-12974)

   - Enable `DFLTCC` (Deflate Conversion Call) compression for s390x for
     levels 1-6 to `CFLAGS`. (jsc#SLE-13775)

     Enable by adding `-DDFLTCC_LEVEL_MASK=0x7e` to `CFLAGS`.
   - Fix three data corruption issues. (bsc#1145276, jsc#SLE-5818,
     jsc#SLE-8914)
   - Add support for `DFLTCC` (hardware-accelerated deflation) for s390x
     arch. (jsc#SLE-5818, jsc#SLE-8914)

     Enable it using the `--enable-dfltcc` option.
   - Compressed gzip output no longer contains the current time as a
     timestamp when the input is not a regular file. Instead, the output
     contains a `null` (zero) timestamp. This makes gzip's behavior more
     reproducible when used as part of a pipeline.
   - A use of uninitialized memory on some malformed inputs has been fixed.
   - A few theoretical race conditions in signal handlers have been fixed.
   - Update gnulib for `libio.h` removal.


Patch Instructions:

   To install this SUSE Recommended Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Basesystem 15-SP1:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-3792=1



Package List:

   - SUSE Linux Enterprise Module for Basesystem 15-SP1 (aarch64 ppc64le s390x x86_64):

      gzip-1.10-4.3.1
      gzip-debuginfo-1.10-4.3.1
      gzip-debugsource-1.10-4.3.1


References:

   https://bugzilla.suse.com/1145276