This update for glibc fixes the following issues: Security issues: - CVE-2017-8804: Fix memory leak after deserialization failure in xdr_bytes, xdr_string - CVE-2017-12132: Reduce EDNS payload size to 1200 bytes - CVE-2018-6485,CVE-2018-6551: Fix integer overflows in internal memalign and malloc functions - CVE-2018-1000001: Avoid underflow of malloced area in realpath Also a non security issue was fixed: - Do not fail if one of the two responses to AF_UNSPEC fails