This update for php53 fixes the following issues: The following security issue was fixed: - An out-of-bounds read in the do_core_note function in readelf.c in libmagic.a allowed remote attackers to cause a denial of service via a crafted ELF file - CVE-2018-12882: exif_read_from_impl allowed attackers to trigger a use-after-free because it closed a stream that it is not responsible for closing