CVE-2015-7969

This xen update is based on upstream 4.5.2 maintenance release, and fixes the following security issues:

The vgic_v2_to_sgi function in arch/arm/vgic-v2.c in Xen 4.5.x, when running on ARM hardware with general interrupt controller (GIC) version 2, allows local guest users to cause a denial of service (host crash) by writing an invalid value to the GICD.SGIR register (CVE-2015-0268).

The ARM GIC distributor virtualization in Xen 4.4.x and 4.5.x allows local guests to cause a denial of service by causing a large number messages to be logged (CVE-2015-1563).

The emulation routines for unspecified X86 devices in Xen 3.2.x through 4.5.x does not properly initialize data, which allow local HVM guest users to obtain sensitive information via vectors involving an unsupported access size (CVE-2015-2044).

The HYPERVISOR_xen_version hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors (CVE-2015-2045).

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response (CVE-2015-2150).

The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors (CVE-2015-2151).

Xen 4.5.x and earlier enables certain default backends when emulating a VGA device for an x86 HVM guest qemu even when the configuration disables them, which allows local guest users to obtain access to the VGA console by (1) setting the DISPLAY environment variable, when compiled with SDL support, or connecting to the VNC server on (2) ::1 or (3) 127.0.0.1, when not compiled with SDL support (CVE-2015-2152).

Xen 4.3.x, 4.4.x, and 4.5.x, when using toolstack disaggregation, allows remote domains with partial management control to cause a denial of service (host lock) via unspecified domctl operations (CVE-2015-2751).

The XEN_DOMCTL_memory_mapping hypercall in Xen 3.2.x through 4.5.x, when using a PCI passthrough device, is not preemptable, which allows local x86 HVM domain users to cause a denial of service (host CPU consumption) via a crafted request to the device model (qemu-dm) (CVE-2015-2752).

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response (CVE-2015-2756).

Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS set (CVE-2015-3209).

Stack-based buffer overflow in the xl command line utility in Xen 4.1.x through 4.5.x allows local guest administrators to gain privileges via a long configuration argument (CVE-2015-3259).

Xen 4.2.x through 4.5.x does not initialize certain fields, which allows certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request (CVE-2015-3340).

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other…

These are all security issues fixed in the xen-4.7.0_12-1.3 package on the GA media of openSUSE Tumbleweed.

xen was updated to fix nine security issues.

These security issues were fixed:

• CVE-2015-4037: The slirp_smb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.- files before the program (bsc#932267).
• CVE-2014-0222: Integer overflow in the qcow_open function allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2015-7835: Uncontrolled creation of large page mappings by PV guests (bsc#950367).
• CVE-2015-7311: libxl in Xen did not properly handle the readonly flag on disks when using the qemu-xen device model, which allowed local guest users to write to a read-only disk image (bsc#947165).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-6815: With e1000 NIC emulation support it was possible to enter an infinite loop (bsc#944697).
• CVE-2015-7969: Leak of main per-domain vcpu pointer array leading to denial of service (bsc#950703).
• CVE-2015-7969: Leak of per-domain profiling- related vcpu pointer array leading to denial of service (bsc#950705).
• CVE-2015-7971: Some pmu and profiling hypercalls log without rate limiting (bsc#950706).

These non-security issues were fixed:

• bsc#907514: Bus fatal error: SLES 12 sudden reboot has been observed
• bsc#910258: SLES12 Xen host crashes with FATAL NMI after shutdown of guest with VT-d NIC
• bsc#918984: Bus fatal error: SLES11-SP4 sudden reboot has been observed
• bsc#923967: Partner-L3: Bus fatal error: SLES11-SP3 sudden reboot has been observed
• bsc#941074: Device 51728 could not be connected. Hotplug scripts not working

xen was updated to version 4.4.3 to fix nine security issues.

These security issues were fixed:

• CVE-2015-4037: The slirp_smb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.- files before the program (bsc#932267).
• CVE-2014-0222: Integer overflow in the qcow_open function allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2015-7835: Uncontrolled creation of large page mappings by PV guests (bsc#950367).
• CVE-2015-7311: libxl in Xen did not properly handle the readonly flag on disks when using the qemu-xen device model, which allowed local guest users to write to a read-only disk image (bsc#947165).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-6815: With e1000 NIC emulation support it was possible to enter an infinite loop (bsc#944697).
• CVE-2015-7969: Leak of main per-domain vcpu pointer array leading to denial of service (bsc#950703).
• CVE-2015-7969: Leak of per-domain profiling- related vcpu pointer array leading to denial of service (bsc#950705).
• CVE-2015-7971: Some pmu and profiling hypercalls log without rate limiting (bsc#950706).

These non-security issues were fixed:

• bsc#907514: Bus fatal error: SLES 12 sudden reboot has been observed
• bsc#910258: SLES12 Xen host crashes with FATAL NMI after shutdown of guest with VT-d NIC
• bsc#918984: Bus fatal error: SLES11-SP4 sudden reboot has been observed
• bsc#923967: Partner-L3: Bus fatal error: SLES11-SP3 sudden reboot has been observed
• bnc#901488: Intel ixgbe driver assigns rx/tx queues per core resulting in irq problems on servers with a large amount of CPU cores
• bsc#945167: Running command: xl pci-assignable-add 03:10.1 secondly show errors
• bsc#949138: Setting vcpu affinity under Xen causes libvirtd abort
• bsc#949549: xm create hangs when maxmen value is enclosed in quotes

xen was updated to version 4.4.3 to fix nine security issues.

These security issues were fixed:

• CVE-2015-4037: The slirp_smb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.- files before the program (bsc#932267).
• CVE-2014-0222: Integer overflow in the qcow_open function allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2015-7835: Uncontrolled creation of large page mappings by PV guests (bsc#950367).
• CVE-2015-7311: libxl in Xen did not properly handle the readonly flag on disks when using the qemu-xen device model, which allowed local guest users to write to a read-only disk image (bsc#947165).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-6815: With e1000 NIC emulation support it was possible to enter an infinite loop (bsc#944697).
• CVE-2015-7969: Leak of main per-domain vcpu pointer array leading to denial of service (bsc#950703).
• CVE-2015-7969: Leak of per-domain profiling- related vcpu pointer array leading to denial of service (bsc#950705).
• CVE-2015-7971: Some pmu and profiling hypercalls log without rate limiting (bsc#950706).

These non-security issues were fixed:

• bsc#907514: Bus fatal error: SLES 12 sudden reboot has been observed
• bsc#910258: SLES12 Xen host crashes with FATAL NMI after shutdown of guest with VT-d NIC
• bsc#918984: Bus fatal error: SLES11-SP4 sudden reboot has been observed
• bsc#923967: Partner-L3: Bus fatal error: SLES11-SP3 sudden reboot has been observed
• bnc#901488: Intel ixgbe driver assigns rx/tx queues per core resulting in irq problems on servers with a large amount of CPU cores
• bsc#945167: Running command: xl pci-assignable-add 03:10.1 secondly show errors
• bsc#949138: Setting vcpu affinity under Xen causes libvirtd abort

xen was updated to fix eight security issues.

These security issues were fixed:

• CVE-2015-4037: The slirp_smb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.- files before the program (bsc#932267).
• CVE-2014-0222: Integer overflow in the qcow_open function allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2015-7835: Uncontrolled creation of large page mappings by PV guests (bsc#950367).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-6815: With e1000 NIC emulation support it was possible to enter an infinite loop (bsc#944697).
• CVE-2015-7969: Leak of main per-domain vcpu pointer array leading to denial of service (bsc#950703).
• CVE-2015-7969: Leak of per-domain profiling- related vcpu pointer array leading to denial of service (bsc#950705).
• CVE-2015-7971: Some pmu and profiling hypercalls log without rate limiting (bsc#950706).

This update fixes the following security issues:

• bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop in processing command block list

• bsc#956408 - CVE-2015-8339, CVE-2015-8340: xen: XENMEM_exchange error handling issues (XSA-159) xsa159.patch

• bsc#956411 - CVE-2015-7504: xen: heap buffer overflow vulnerability in pcnet emulator (XSA-162)

• bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception

• bsc#953527 - CVE-2015-5307: kernel: kvm/xen: x86: avoid guest->host DOS by intercepting #AC (XSA-156)

• bsc#950704 - CVE-2015-7970: xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150)

• bsc#951845 - CVE-2015-7972: xen: x86: populate-on-demand balloon size inaccuracy can crash guests (XSA-153)

• bsc#950703 - CVE-2015-7969: xen: leak of main per-domain vcpu pointer array (DoS) (XSA-149)

• bsc#950705 - CVE-2015-7969: xen: x86: leak of per-domain profiling-related vcpu pointer array (DoS) (XSA-151)

• bsc#950706 - CVE-2015-7971: xen: x86: some pmu and profiling hypercalls log without rate limiting (XSA-152)

This update fixes the following security issues:

• bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop in processing command block list

• bsc#956592 - xen: virtual PMU is unsupported (XSA-163)

• bsc#956408 - CVE-2015-8339, CVE-2015-8340: xen: XENMEM_exchange error handling issues (XSA-159)

• bsc#956409 - CVE-2015-8341: xen: libxl leak of pv kernel and initrd on error (XSA-160)

• bsc#956411 - CVE-2015-7504: xen: heap buffer overflow vulnerability in pcnet emulator (XSA-162)

• bsc#947165 - CVE-2015-7311: xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142)

• bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception

• bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during fault delivery (XSA-156)

• bsc#950704 - CVE-2015-7970: xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150)

• bsc#951845 - CVE-2015-7972: xen: x86: populate-on-demand balloon size inaccuracy can crash guests (XSA-153)

• bsc#950703 - CVE-2015-7969: xen: leak of main per-domain vcpu pointer array (DoS) (XSA-149)

• bsc#950705 - CVE-2015-7969: xen: x86: leak of per-domain profiling-related vcpu pointer array (DoS) (XSA-151)

• bsc#950706 - CVE-2015-7971: xen: x86: some pmu and profiling hypercalls log without rate limiting (XSA-152)

This update fixes the following security issues:

• bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop in processing command block list

• bsc#956592 - xen: virtual PMU is unsupported (XSA-163)

• bsc#956408 - CVE-2015-8339, CVE-2015-8340: xen: XENMEM_exchange error handling issues (XSA-159)

• bsc#956409 - CVE-2015-8341: xen: libxl leak of pv kernel and initrd on error (XSA-160)

• bsc#956411 - CVE-2015-7504: xen: heap buffer overflow vulnerability in pcnet emulator (XSA-162)

• bsc#947165 - CVE-2015-7311: xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142)

• bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception

• bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during fault delivery (XSA-156) CVE-2015-5307-xsa156.patch

• bsc#950704 - CVE-2015-7970: xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150) 563212c9-x86-PoD-Eager-sweep-for-zeroed-pages.patch

• bsc#951845 - CVE-2015-7972: xen: x86: populate-on-demand balloon size inaccuracy can crash guests (XSA-153) xsa153-libxl.patch xend-xsa153.patch

• Drop 5604f239-x86-PV-properly-populate-descriptor-tables.patch

• bsc#950703 - CVE-2015-7969: xen: leak of main per-domain vcpu pointer array (DoS) (XSA-149)

• bsc#950705 - CVE-2015-7969: xen: x86: leak of per-domain profiling-related vcpu pointer array (DoS) (XSA-151)

• bsc#950706 - CVE-2015-7971: xen: x86: some pmu and profiling hypercalls log without rate limiting (XSA-152)

  This update fixes the following security issues:

• bsc#955399 - Fix xm migrate --log_progress. Due to logic error progress was not logged when requested.

• bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop in processing command block list

• bsc#956592 - xen: virtual PMU is unsupported (XSA-163)

• bsc#956408 - CVE-2015-8339, CVE-2015-8340: xen: XENMEM_exchange error handling issues (XSA-159)

• bsc#956409 - CVE-2015-8341: xen: libxl leak of pv kernel and initrd on error (XSA-160)

• bsc#956411 - CVE-2015-7504: xen: heap buffer overflow vulnerability in pcnet emulator (XSA-162)

• bsc#947165 - CVE-2015-7311: xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142)

• bsc#955399 - Fix xm migrate --live. The options were not passed due to a merge error. As a result the migration was not live, instead the suspended guest was migrated.

• bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception

• bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during fault delivery (XSA-156)

• bsc#950704 - CVE-2015-7970: xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150)

• bsc#951845 - CVE-2015-7972: xen: x86: populate-on-demand balloon size inaccuracy can crash guests (XSA-153)

• Drop 5604f239-x86-PV-properly-populate-descriptor-tables.patch

• bsc#950703 - CVE-2015-7969: xen: leak of main per-domain vcpu pointer array (DoS) (XSA-149)

• bsc#950705 - CVE-2015-7969: xen: x86: leak of per-domain profiling-related vcpu pointer array (DoS) (XSA-151)

• bsc#950706 - CVE-2015-7971: xen: x86: some pmu and profiling hypercalls log without rate limiting (XSA-152)

Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service (memory consumption) via a large number of "teardowns" of domains with the vcpu pointer array allocated using the (1) XEN_DOMCTL_max_vcpus hypercall or the xenoprofile state vcpu pointer array allocated using the (2) XENOPROF_get_buffer or (3) XENOPROF_set_passive hypercall.