CVE-2015-5278

The ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1 allows attackers to cause a denial of service (infinite loop and instance crash) or possibly execute arbitrary code via vectors related to receiving packets.

Qinghao Tang of QIHU 360 Inc. discovered an infinite loop issue in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash). (CVE-2015-5278)

Qinghao Tang of QIHU 360 Inc. discovered a heap buffer overflow flaw in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash), or potentially to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-5279)

A flaw has been discovered in the QEMU emulator built with Virtual Network Device(virtio-net) support. If the guest's virtio-net driver did not support big or mergeable receive buffers, an issue could occur while receiving large packets over the tuntap/ macvtap interfaces. An attacker on the local network could use this flaw to disable the guest's networking; the user could send a large number of jumbo frames to the guest, which could exhaust all receive buffers, and lead to a denial of service. (CVE-2015-7295)

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

qemu was updated to fix several security issues and bugs.

The following vulnerabilities were fixed:

• CVE-2015-5154: Heap-based buffer overflow in the IDE subsystem in QEMU, when the container has a CDROM drive enabled, allows local guest users to execute arbitrary code on the host via unspecified ATAPI commands. (bsc#938344).
• CVE-2015-5278: QEMU was vulnerable to an infinite loop issue that could occur when receiving packets over the network. (bsc#945989)
• CVE-2015-5279: QEMU was vulnerable to a heap buffer overflow issue that could occur when receiving packets over the network. (bsc#945987)
• CVE-2015-6855: QEMU was vulnerable to a divide by zero issue that could occur while executing an IDE command WIN_READ_NATIVE_MAX to determine the maximum size of a drive. (bsc#945404)
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c in QEMU allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value. (bsc#902737):

Also these non-security issues were fixed:

• bsc#937572: Fixed dictzip on big endian systems
• bsc#934517: Fix 'info tlb' causes guest to freeze
• bsc#934506: Fix vte monitor consol looks empy
• bsc#937125: Fix parsing of scsi-disk wwn uint64 property
• bsc#945778: Drop .probe hooks for DictZip and tar block drivers
• bsc#937572: Fold common-obj-y -> block-obj-y change into original patches
• bsc#928308,bsc#944017: Fix virtio-ccw index errors when initrd gets too large
• bsc#936537: Fix possible qemu-img error when converting to compressed qcow2 image
• bsc#939216: Fix reboot fail after install using uefi
• bsc#943446: qemu-img convert doesn't create MB aligned VHDs anymore

xen was updated to fix 44 security issues.

These security issues were fixed:

• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#928393).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#924018).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet (bsc#957162).
• CVE-2015-7549: pci: NULL pointer dereference issue (bsc#958917).
• CVE-2015-8345: eepro100: infinite loop in processing command block list (bsc#956829).
• CVE-2015-8504: VNC: floating point exception (bsc#958491).
• CVE-2015-8550: Paravirtualized drivers were incautious about shared memory contents (XSA-155) (bsc#957988).
• CVE-2015-8554: qemu-dm buffer overrun in MSI-X handling (XSA-164) (bsc#958007).
• CVE-2015-8555: Information leak in legacy x86 FPU/XMM initialization (XSA-165) (bsc#958009).
• CVE-2015-8558: Infinite loop in…

xen was updated to fix 47 security issues.

These security issues were fixed:

• CVE-2013-4527: Buffer overflow in hw/timer/hpet.c might have allowed remote attackers to execute arbitrary code via vectors related to the number of timers (bnc#864673).
• CVE-2013-4529: Buffer overflow in hw/pci/pcie_aer.c allowed remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image (bnc#864678).
• CVE-2013-4530: Buffer overflow in hw/ssi/pl022.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image (bnc#864682).
• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#928393).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#924018).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute…

xen was updated to fix 27 security issues.

These security issues were fixed:

• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet (bsc#957162).
• CVE-2015-8504: VNC: floating point exception (bsc#958491).
• CVE-2015-8550: Paravirtualized drivers were incautious about shared memory contents (XSA-155) (bsc#957988).
• CVE-2015-8554: qemu-dm buffer overrun in MSI-X handling (XSA-164) (bsc#958007).
• CVE-2015-8555: Information leak in legacy x86 FPU/XMM initialization (XSA-165) (bsc#958009).
• CVE-2015-8558: Infinite loop in ehci_advance_state resulted in DoS (bsc#959005).
• CVE-2015-8743: ne2000: OOB memory access in ioport r/w functions (bsc#960725).
• CVE-2015-8745: Reading IMR registers lead to a crash via assert(2) call (bsc#960707).
• CVE-2016-1570: The PV superpage functionality in arch/x86/mm.c allowed local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates (bsc#960861).
• CVE-2016-1571: VMX: intercept issue with INVLPG on non-canonical address (XSA-168) (bsc#960862).
• CVE-2016-1714: nvram: OOB r/w access in processing firmware configurations (bsc#961691).
• CVE-2016-1981: e1000 infinite loop in start_xmit and e1000_receive_iov routines (bsc#963782).
• CVE-2016-2270: Xen allowed local guest administrators to cause a denial of service (host reboot) via vectors related to multiple mappings of MMIO pages with different cachability settings (bsc#965315). -…

xen was updated to fix 46 security issues.

These security issues were fixed:

• CVE-2013-4527: Buffer overflow in hw/timer/hpet.c might have allowed remote attackers to execute arbitrary code via vectors related to the number of timers (bsc#964746).
• CVE-2013-4529: Buffer overflow in hw/pci/pcie_aer.c allowed remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image (bsc#964929).
• CVE-2013-4530: Buffer overflow in hw/ssi/pl022.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image (bsc#964950).
• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#964644).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#964452).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#962642).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#962335).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#962758).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#964925).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#965112).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#962611).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#962627).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#964431).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#962632).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#964947).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#965156).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute…

kvm was updated to fix 33 security issues.

These security issues were fixed:

• CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)
• CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)
• CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)
• CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)
• CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)
• CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)
• CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)
• CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)
• CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)
• CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)
• CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)
• CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)
• CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)
• CVE-2014-9718: Fixed the handling of malformed or short ide PRDTs to avoid any opportunity for guest to cause DoS by abusing that interface (bsc#928393)
• CVE-2014-3689: Fixed insufficient parameter validation in rectangle functions (bsc#901508)
• CVE-2014-3615: The VGA emulator in QEMU allowed local guest users to read host memory by setting the display to a high resolution (bsc#895528).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-5279: Heap-based buffer overflow in the ne2000_receive function in hw/net/ne2000.c in QEMU allowed guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via vectors related to receiving packets (bsc#945987).
• CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).
• CVE-2015-6855: hw/ide/core.c in QEMU did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7295: hw/virtio/virtio.c in the Virtual Network Device (virtio-net) support in QEMU, when big or mergeable receive buffers are not supported, allowed remote attackers to cause a denial of service (guest network consumption) via a flood of jumbo frames on the (1) tuntap or (2) macvtap interface (bsc#947159).
• CVE-2015-7549: PCI null pointer dereferences (bsc#958917).
• CVE-2015-8504: VNC floating point exception (bsc#958491).
• CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).
• CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).
• CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).
• CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).
• CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).
• CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).
• CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).
• CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).
• CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).

This non-security issue was fixed:

• Fix case of IDE interface needing busy status set before flush (bsc#936132)

xen was updated to fix 36 security issues.

These security issues were fixed:

• CVE-2013-4527: Buffer overflow in hw/timer/hpet.c might have allowed remote attackers to execute arbitrary code via vectors related to the number of timers (bnc#864673).
• CVE-2013-4529: Buffer overflow in hw/pci/pcie_aer.c allowed remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image (bnc#864678).
• CVE-2013-4530: Buffer overflow in hw/ssi/pl022.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image (bnc#864682).
• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#928393).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet (bsc#957162).
• CVE-2015-8345: eepro100: infinite loop in processing command block list (bsc#956829).
• CVE-2015-8504: VNC: floating point exception (bsc#958491). -…

kvm was updated to fix 33 security issues.

These security issues were fixed:

• CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)
• CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)
• CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)
• CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)
• CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)
• CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)
• CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)
• CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)
• CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)
• CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)
• CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)
• CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)
• CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)
• CVE-2014-9718: Fixed the handling of malformed or short ide PRDTs to avoid any opportunity for guest to cause DoS by abusing that interface (bsc#928393)
• CVE-2014-3689: Fixed insufficient parameter validation in rectangle functions (bsc#901508)
• CVE-2014-3615: The VGA emulator in QEMU allowed local guest users to read host memory by setting the display to a high resolution (bsc#895528).
• CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-5279: Heap-based buffer overflow in the ne2000_receive function in hw/net/ne2000.c in QEMU allowed guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via vectors related to receiving packets (bsc#945987).
• CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).
• CVE-2015-6855: hw/ide/core.c in QEMU did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7295: hw/virtio/virtio.c in the Virtual Network Device (virtio-net) support in QEMU, when big or mergeable receive buffers are not supported, allowed remote attackers to cause a denial of service (guest network consumption) via a flood of jumbo frames on the (1) tuntap or (2) macvtap interface (bsc#947159).
• CVE-2015-7549: PCI null pointer dereferences (bsc#958917).
• CVE-2015-8504: VNC floating point exception (bsc#958491).
• CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).
• CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).
• CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).
• CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).
• CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).
• CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).
• CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).
• CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).
• CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).

This non-security issue was fixed:

• Fix case of IDE interface needing busy status set before flush (bsc#936132)

Lian Yihan discovered that QEMU incorrectly handled certain payload messages in the VNC display driver. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-5239)

Qinghao Tang discovered that QEMU incorrectly handled receiving certain packets in the NE2000 network driver. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service. (CVE-2015-5278)

Qinghao Tang discovered that QEMU incorrectly handled receiving certain packets in the NE2000 network driver. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-5279)

Qinghao Tang discovered that QEMU incorrectly handled transmit descriptor data when sending network packets. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service. (CVE-2015-6815)

Qinghao Tang discovered that QEMU incorrectly handled ATAPI command permissions. A malicious guest could use this issue to cause the QEMU process to crash, resulting in a denial of service. (CVE-2015-6855)