SUSE-SU-2016:2473-1

Dashboard / Vulnerabilities / SUSE-SU-2016:2473-1

SUSE-SU-2016:2473-1

Summary: Security update for xen

Details: This update for xen fixes several issues. These security issues were fixed: - CVE-2016-7092: The get_page_from_l3e function in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges via vectors related to L3 recursive pagetables (bsc#995785). - CVE-2016-7093: Xen allowed local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation (bsc#995789). - CVE-2016-7094: Buffer overflow in Xen allowed local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update (bsc#995792). - CVE-2016-6836: Information leakage in vmxnet3_complete_packet (bsc#994761). - CVE-2016-6888: Integer overflow in packet initialisation in VMXNET3 device driver. Aprivileged user inside guest c... (bsc#994772). - CVE-2016-6833: Use after free while writing (bsc#994775). - CVE-2016-6835: Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 deviceemulation. (bsc#994625). - CVE-2016-6834: An infinite loop during packet fragmentation (bsc#994421). - CVE-2016-6258: The PV pagetable code in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries (bsc#988675). - CVE-2016-6259: Xen did not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allowed local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check (bsc#988676). These non-security issues were fixed: - bsc#991934: Hypervisor crash in csched_acct - bsc#992224: During boot of Xen Hypervisor, failed to get contiguous memory for DMA - bsc#955104: Virsh reports error 'one or more references were leaked after disconnect from hypervisor' when 'virsh save' failed due to 'no response from client after 6 keepalive messages' - bsc#959552: Migration of HVM guest leads into libvirt segmentation fault - bsc#993665: Migration of xen guests finishes in: One or more references were leaked after disconnect from the hypervisor - bsc#959330: Guest migrations using virsh results in error 'Internal error: received hangup / error event on socket' - bsc#990500: VM virsh migration fails with keepalive error: ':virKeepAliveTimerInternal:143 : No response from client' - bsc#953518: Unplug also SCSI disks in qemu-xen-traditional for upstream unplug protocol - bsc#953518: xen_platform: unplug also SCSI disks in qemu-xen - bsc#971949: xl: Support (by ignoring) xl migrate --live. xl migrations are always live - bsc#970135: New virtualization project clock test randomly fails on Xen - bsc#990970: Add PMU support for Intel E7-8867 v4 (fam=6, model=79)

References: https://www.suse.com/support/update/announcement/2016/suse-su-20162473-1/, https://bugzilla.suse.com/953518, https://bugzilla.suse.com/955104, https://bugzilla.suse.com/959330, https://bugzilla.suse.com/959552, https://bugzilla.suse.com/970135, https://bugzilla.suse.com/971949, https://bugzilla.suse.com/988675, https://bugzilla.suse.com/988676, https://bugzilla.suse.com/990500, https://bugzilla.suse.com/990970, https://bugzilla.suse.com/991934, https://bugzilla.suse.com/992224, https://bugzilla.suse.com/993665, https://bugzilla.suse.com/994421, https://bugzilla.suse.com/994625, https://bugzilla.suse.com/994761, https://bugzilla.suse.com/994772, https://bugzilla.suse.com/994775, https://bugzilla.suse.com/995785, https://bugzilla.suse.com/995789, https://bugzilla.suse.com/995792, https://www.suse.com/security/cve/CVE-2016-6258, https://www.suse.com/security/cve/CVE-2016-6259, https://www.suse.com/security/cve/CVE-2016-6833, https://www.suse.com/security/cve/CVE-2016-6834, https://www.suse.com/security/cve/CVE-2016-6835, https://www.suse.com/security/cve/CVE-2016-6836, https://www.suse.com/security/cve/CVE-2016-6888, https://www.suse.com/security/cve/CVE-2016-7092, https://www.suse.com/security/cve/CVE-2016-7093, https://www.suse.com/security/cve/CVE-2016-7094