This update for qemu fixes the following issues: Security issues fixed: - CVE-2019-6778: Fixed a heap buffer overflow issue in the SLiRP networking implementation . - CVE-2018-16872: Fixed a host security vulnerability related to handling symlinks in usb-mtp . - CVE-2018-19489: Fixed a denial of service vulnerability in virtfs . - CVE-2018-19364: Fixed a use-after-free if the virtfs interface resulting in a denial of service . - CVE-2018-18954: Fixed a denial of service vulnerability related to PowerPC PowerNV memory operations . Non-security issues fixed: - Improved disk performance for qemu on xen . - Fixed xen offline migration . - Fixed pwrite64/pread64/write to return 0 over -1 for a zero length NULL buffer in qemu . - Use /bin/bash to echo value into sys fs for ksm control . - Return specification exception for unimplemented diag 308 subcodes rather than a hardware error .