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The 4.7.2 release brings a number of bugfixes and improvements: https://www.xenproject.org/downloads/xen-archives/xen-project-47-series/xen-472.html Including fixes for the following security issues: XSA-191: x86 null segments not always treated as unusable (CVE-2016-9386) XSA-192: x86 task switch to VM86 mode mis-handled (CVE-2016-9382) XSA-193: x86 segment base write emulation lacking canonical address checks (CVE-2016-9385) XSA-194: guest 32-bit ELF symbol table load leaking host data (CVE-2016-9384) XSA-195: x86 64-bit bit test instruction emulation broken (CVE-2016-9383) XSA-196: x86 software interrupt injection mis-handled (CVE-2016-9377 CVE-2016-9378) XSA-197: qemu incautious about shared ring processing (CVE-2016-9381) XSA-198: delimiter injection vulnerabilities in pygrub (CVE-2016-9379 CVE-2016-9380) XSA-199: qemu ioport array overflow (CVE-2016-9637) XSA-200: x86 CMPXCHG8B emulation fails to ignore operand size override Files (CVE-2016-9932) XSA-201: ARM guests may induce host asynchronous abort (CVE-2016-9815 CVE-2016-9816 CVE-2016-9817 CVE-2016-9818) XSA-202: x86 PV guests may be able to mask interrupts (CVE-2016-10024) XSA-203: x86: missing NULL pointer check in VMFUNC emulation (CVE-2016-10025) XSA-204: x86: Mishandling of SYSCALL singlestep during emulation (CVE-2016-10013) XSA-207: memory leak when destroying guest without PT devices XSA-208: oob access in cirrus bitblt copy (CVE-2017-2615) XSA-209: cirrus_bitblt_cputovideo does not check if memory region is safe (CVE-2017-2620) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>