This update for gdal to version 2.4.3 fixes the following issues:

gdal was updated to 2.4.3: 

- CVE-2019-17545: Fixed a double free vulnerability in OGRExpatRealloc (boo#1153918).
- Multiple bug and stability fixes  
  
For more information regarding the release at: https://trac.osgeo.org/gdal/wiki/Release/2.4.3-News