{"id":"CVE-2016-6351","aliases":["DEBIAN-CVE-2016-6351","DLA-1599-1","DLA-573-1","DLA-574-1","EUVD-2016-7274","GHSA-f7gh-f5wg-p6m2","SUSE-SU-2016:2093-1","SUSE-SU-2016:2100-1","SUSE-SU-2016:2533-1","SUSE-SU-2016:2725-1","SUSE-SU-2016:3044-1","UBUNTU-CVE-2016-6351","USN-3047-1","openSUSE-SU-2024:10196-1","openSUSE-SU-2024:10233-1"],"status":"published","title":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP...","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","severity":{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00474,"percentile":0.41235,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2016-07-27T00:00:00Z","modified":"2026-10-24T10:30:34Z","fixes":[{"ecosystem":"Debian:12","package":"qemu","fixed_in":["1:2.6+dfsg-3.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:2.6+dfsg-3.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:2.6+dfsg-3.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"qemu","fixed_in":["2.0.0+dfsg-2ubuntu1.26"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"qemu","fixed_in":["1:2.5+dfsg-5ubuntu10.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.6+dfsg-3.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.6+dfsg-3.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.6+dfsg-3.1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.1+dfsg-12+deb8u8"}]}],"versions":["1:2.1+dfsg-11","1:2.1+dfsg-12","1:2.1+dfsg-12+deb8u1","1:2.1+dfsg-12+deb8u2","1:2.1+dfsg-12+deb8u3","1:2.1+dfsg-12+deb8u4","1:2.1+dfsg-12+deb8u4~bpo70+1","1:2.1+dfsg-12+deb8u5","1:2.1+dfsg-12+deb8u5a","1:2.1+dfsg-12+deb8u5a~bpo70+1","1:2.1+dfsg-12+deb8u6","1:2.1+dfsg-12+deb8u7","1:2.1+dfsg-12~bpo70+1"],"bundled":47},{"source":"osv","ecosystem":"Debian:7","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.2+dfsg-6+deb7u14"}]}],"versions":["1.1.2+dfsg-6a","1.1.2+dfsg-6a+deb7u1","1.1.2+dfsg-6a+deb7u10","1.1.2+dfsg-6a+deb7u11","1.1.2+dfsg-6a+deb7u12","1.1.2+dfsg-6a+deb7u13","1.1.2+dfsg-6a+deb7u2","1.1.2+dfsg-6a+deb7u3","1.1.2+dfsg-6a+deb7u4","1.1.2+dfsg-6a+deb7u5","1.1.2+dfsg-6a+deb7u6","1.1.2+dfsg-6a+deb7u7","1.1.2+dfsg-6a+deb7u7~bpo60+1","1.1.2+dfsg-6a+deb7u8","1.1.2+dfsg-6a+deb7u9"],"bundled":6},{"source":"osv","ecosystem":"Debian:7","package":"qemu-kvm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.2+dfsg-6+deb7u14"}]}],"versions":["1.1.2+dfsg-6","1.1.2+dfsg-6+deb7u1","1.1.2+dfsg-6+deb7u10","1.1.2+dfsg-6+deb7u11","1.1.2+dfsg-6+deb7u12","1.1.2+dfsg-6+deb7u13","1.1.2+dfsg-6+deb7u2","1.1.2+dfsg-6+deb7u3","1.1.2+dfsg-6+deb7u4","1.1.2+dfsg-6+deb7u5","1.1.2+dfsg-6+deb7u6","1.1.2+dfsg-6+deb7u7","1.1.2+dfsg-6+deb7u7~bpo60+1","1.1.2+dfsg-6+deb7u8","1.1.2+dfsg-6+deb7u9"],"bundled":6},{"source":"osv","ecosystem":"SUSE:Linux 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:["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4536","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4541","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4542","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4544","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-6399","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0142","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0143","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0144","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0145","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0146","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0147","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0150","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0182","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-4964","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2016-6351","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-09-07T18:00:00Z","modified":"2024-08-06T01:29:19.249Z","updated_at":"2026-11-02T14:33:34.443637Z"}],"euvd":[{"id":"EUVD-2016-7274","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-09-07T18:00:00Z","modified":"2024-08-06T01:29:19Z","updated_at":"2026-11-03T02:22:39.91691Z"}],"ghsa":[{"id":"GHSA-f7gh-f5wg-p6m2","title":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP...","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2022-05-13T01:14:33Z","modified":"2023-02-20T05:05:56Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T14:54:11.398505Z"}],"nvd":[{"id":"CVE-2016-6351","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-09-07T18:59:04.64Z","modified":"2026-06-17T00:50:52.55Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:03:29.893676Z"}],"osv":[{"id":"CVE-2016-6351","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-09-07T18:59:04.64Z","modified":"2026-10-24T10:30:34.899463538Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:02.776224Z"},{"id":"DEBIAN-CVE-2016-6351","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-09-07T18:59:04.64Z","modified":"2026-09-22T07:02:40.179853817Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:27.910042Z"},{"id":"UBUNTU-CVE-2016-6351","description":"The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.","status":"published","published":"2016-07-27T00:00:00Z","modified":"2026-02-04T03:13:12.327544Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"},{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.642042Z"},{"id":"DLA-1599-1","title":"qemu - security update","status":"published","published":"2018-11-29T00:00:00Z","modified":"2026-03-09T01:18:54.561467Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DLA-573-1","title":"qemu - security update","status":"published","published":"2016-07-30T00:00:00Z","modified":"2026-03-09T02:09:42.830485Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"DLA-574-1","title":"qemu-kvm - security update","status":"published","published":"2016-07-30T00:00:00Z","modified":"2026-03-09T02:10:31.838961Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"openSUSE-SU-2024:10196-1","title":"xen-4.7.0_12-1.3 on GA media","description":"These are all security issues fixed in the xen-4.7.0_12-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:39.408456Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"openSUSE-SU-2024:10233-1","title":"qemu-2.6.1-1.5 on GA media","description":"These are all security issues fixed in the qemu-2.6.1-1.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:31:08.968833Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"SUSE-SU-2016:2093-1","title":"Security update for xen","description":"This update for xen to version 4.5.3 fixes the several issues.\n\nThese security issues were fixed:\n\n- CVE-2016-6258: Potential privilege escalation in PV guests (XSA-182) (bsc#988675).\n- CVE-2016-6259: Missing SMAP whitelisting in 32-bit exception / event delivery (XSA-183) (bsc#988676).\n- CVE-2016-5337: The megasas_ctrl_get_info function allowed local guest OS administrators to obtain sensitive host memory information via vectors related to reading device control information (bsc#983973).\n- CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions allowed local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the host via vectors related to the information transfer buffer (bsc#983984).\n- CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode (bsc#982960).\n- CVE-2016-4453: The vmsvga_fifo_run function allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command (bsc#982225).\n- CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggered an out-of-bounds read (bsc#982224).\n- CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl function allowed local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call (bsc#982286).\n- CVE-2016-5105: Stack information leakage while reading configuration (bsc#982024).\n- CVE-2016-5106: Out-of-bounds write while setting controller properties (bsc#982025).\n- CVE-2016-5107: Out-of-bounds read in megasas_lookup_frame() function (bsc#982026).\n- CVE-2016-4963: The libxl device-handling allowed local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore (bsc#979670).\n- CVE-2016-4962: The libxl device-handling allowed local OS guest administrators to cause a denial of service (resource consumption or management facility confusion) or gain host OS privileges by manipulating information in guest controlled areas of xenstore (bsc#979620).\n- CVE-2016-4952: Out-of-bounds access issue in pvsci_ring_init_msg/data routines (bsc#981276).\n- CVE-2014-3672: The qemu implementation in libvirt Xen allowed local guest OS users to cause a denial of service (host disk consumption) by writing to stdout or stderr (bsc#981264).\n- CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller (FSC) support did not properly check DMA length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command (bsc#980724).\n- CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI Controller (FSC) support did not properly check command buffer length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the host via unspecified vectors (bsc#980716).\n- CVE-2016-3710: The VGA module improperly performed bounds checking on banked access to video memory, which allowed local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the 'Dark Portal' issue (bsc#978164).\n- CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping (bsc#974038).\n- CVE-2016-3159: The fpu_fxrstor function in arch/x86/i387.c did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-3158: The xrstor function did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-4037: The ehci_advance_state function in hw/usb/hcd-ehci.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list (bsc#976111).\n- CVE-2016-4020: The patch_instruction function did not initialize the imm32 variable, which allowed local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR) (bsc#975907).\n- CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function, when the Stellaris ethernet controller is configured to accept large packets, allowed remote attackers to cause a denial of service (QEMU crash) via a large packet (bsc#975130).\n- CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the guest NIC is configured to accept large packets, allowed remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes (bsc#975138).\n- bsc#978295: x86 software guest page walk PS bit handling flaw (XSA-176)\n- CVE-2016-5403: virtio: unbounded memory allocation on host via guest leading to DoS (XSA-184) (bsc#990923)\n- CVE-2016-6351: scsi: esp: OOB write access in esp_do_dma (bsc#990843)\n\nThese non-security issues were fixed:\n\n- bsc#986586: Out of memory (oom) during boot on 'modprobe xenblk' (non xen kernel)\n- bsc#900418: Dump cannot be performed on SLES12 XEN\n- bsc#953339: Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests to qemu-xen-upstream\n- bsc#953362: Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests to qemu-xen-upstream\n- bsc#953518: Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests to qemu-xen-upstream\n- bsc#984981: Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests to qemu-xen-upstream\n- bsc#954872: Script block-dmmd not working as expected - libxl: error: libxl_dm.c (Additional fixes)\n- bsc#982695: qemu fails to boot HVM guest from xvda\n- bsc#958848: HVM guest crash at /usr/src/packages/BUILD/xen-4.4.2-testing/obj/default/balloon/balloon.c:407\n- bsc#949889: Fail to install 32-bit paravirt VM under SLES12SP1Beta3 XEN\n- bsc#954872: Script block-dmmd not working as expected - libxl: error: libxl_dm.c (another modification)\n- bsc#961600: Poor performance when Xen HVM domU configured with max memory greater than current memory\n- bsc#963161: Windows VM getting stuck during load while a VF is assigned to it after upgrading to latest maintenance updates\n- bsc#976058: Xen error running simple HVM guest (Post Alpha 2 xen+qemu)\n- bsc#973631: AWS EC2 kdump issue\n- bsc#957986: Indirect descriptors are not compatible with Amazon block backend\n- bsc#964427: Discarding device blocks: failed - Input/output error\n- bsc#985503: Fixed vif-route \n- bsc#978413: PV guest upgrade from SLES11 SP4 to SLES 12 SP2 alpha3 failed \n","status":"published","published":"2016-08-17T12:22:27Z","modified":"2026-02-04T02:40:45.544605Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:2100-1","title":"Security update for xen","description":"This update for xen fixes the several issues.\n\nThese security issues were fixed:\n- CVE-2014-3672: The qemu implementation in libvirt Xen allowed local guest OS users to cause a denial of service (host disk consumption) by writing to stdout or stderr (bsc#981264).\n- CVE-2016-3158: The xrstor function did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-3159: The fpu_fxrstor function in arch/x86/i387.c did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-3710: The VGA module improperly performed bounds checking on banked access to video memory, which allowed local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the 'Dark Portal' issue (bsc#978164).\n- CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping (bsc#974038).\n- CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function, when the Stellaris ethernet controller is configured to accept large packets, allowed remote attackers to cause a denial of service (QEMU crash) via a large packet (bsc#975130).\n- CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the guest NIC is configured to accept large packets, allowed remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes (bsc#975138).\n- CVE-2016-4020: The patch_instruction function did not initialize the imm32 variable, which allowed local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR) (bsc#975907).\n- CVE-2016-4037: The ehci_advance_state function in hw/usb/hcd-ehci.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list (bsc#976111).\n- CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI Controller (FSC) support did not properly check command buffer length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the host via unspecified vectors (bsc#980716).\n- CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller (FSC) support did not properly check DMA length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command (bsc#980724).\n- CVE-2016-4453: The vmsvga_fifo_run function allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command (bsc#982225).\n- CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggered an out-of-bounds read (bsc#982224).\n- CVE-2016-4952: Out-of-bounds access issue in pvsci_ring_init_msg/data routines (bsc#981276).\n- CVE-2016-4962: The libxl device-handling allowed local OS guest administrators to cause a denial of service (resource consumption or management facility confusion) or gain host OS privileges by manipulating information in guest controlled areas of xenstore (bsc#979620).\n- CVE-2016-4963: The libxl device-handling allowed local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore (bsc#979670).\n- CVE-2016-5105: Stack information leakage while reading configuration (bsc#982024).\n- CVE-2016-5106: Out-of-bounds write while setting controller properties (bsc#982025).\n- CVE-2016-5107: Out-of-bounds read in megasas_lookup_frame() function (bsc#982026).\n- CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl function allowed local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call (bsc#982286).\n- CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode (bsc#982960).\n- CVE-2016-5337: The megasas_ctrl_get_info function allowed local guest OS administrators to obtain sensitive host memory information via vectors related to reading device control information (bsc#983973).\n- CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions allowed local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the host via vectors related to the information transfer buffer (bsc#983984).\n- CVE-2016-6258: Potential privilege escalation in PV guests (XSA-182) (bsc#988675).\n- bsc#978295: x86 software guest page walk PS bit handling flaw (XSA-176)\n- CVE-2016-5403: virtio: unbounded memory allocation on host via guest leading to DoS (XSA-184) (bsc#990923)\n- CVE-2016-6351: scsi: esp: OOB write access in esp_do_dma (bsc#990843)\n\nThese non-security issues were fixed:\n- bsc#954872: Script block-dmmd not working as expected - libxl: error: libxl_dm.c\n- bsc#957986: Indirect descriptors are not compatible with Amazon block backend\n- bsc#958848: HVM guest crash at /usr/src/packages/BUILD/xen-4.4.2-testing/obj/default/balloon/balloon.c:407\n- bsc#961600: Poor performance when Xen HVM domU configured with max memory greater than current memory\n- bsc#963161: Windows VM getting stuck during load while a VF is assigned to it after upgrading to latest maintenance updates\n- bsc#964427: Discarding device blocks: failed - Input/output error\n- bsc#976058: Xen error running simple HVM guest (Post Alpha 2 xen+qemu)\n- bsc#982695: qemu fails to boot HVM guest from xvda\n- bsc#986586: Out of memory (oom) during boot on 'modprobe xenblk' (non xen kernel)\n- bsc#967630: Discrepancy in reported memory size with correction XSA-153 for xend. Additional memory adjustment made.\n- bsc#974912: Persistent performance drop after live-migration using xend tool stack\n- bsc#979035: Restore xm migrate fixes for bsc#955399/ bsc#955399\n- bsc#989235: xen dom0 xm create command only searched /etc/xen instead of /etc/xen/vm\n- Live Migration SLES 11 SP3 to SP4 on AMD: 'xc: error: Couldn't set extended vcpu0 info'\n- bsc#985503: Fixed vif-route\n- bsc#978413: PV guest upgrade from SLES11 SP4 to SLES 12 SP2 alpha3 failed\n","status":"published","published":"2016-08-18T12:48:09Z","modified":"2026-02-04T03:16:00.994297Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:2533-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n- CVE-2014-3672: The qemu implementation in libvirt Xen allowed local guest OS users to cause a denial of service (host disk consumption) by writing to stdout or stderr (bsc#981264).\n- CVE-2016-3158: The xrstor function did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-3159: The fpu_fxrstor function in arch/x86/i387.c did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188).\n- CVE-2016-3710: The VGA module improperly performed bounds checking on banked access to video memory, which allowed local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the 'Dark Portal' issue (bsc#978164)\n- CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping (bsc#974038).\n- CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function, when the Stellaris ethernet controller is configured to accept large packets, allowed remote attackers to cause a denial of service (QEMU crash) via a large packet (bsc#975130).\n- CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the guest NIC is configured to accept large packets, allowed remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes (bsc#975138).\n- CVE-2016-4020: The patch_instruction function did not initialize the imm32 variable, which allowed local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR) (bsc#975907)\n- CVE-2016-4037: The ehci_advance_state function in hw/usb/hcd-ehci.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list (bsc#976111)\n- CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI Controller (FSC) support did not properly check command buffer length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the host via unspecified vectors (bsc#980716)\n- CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller (FSC) support did not properly check DMA length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command (bsc#980724)\n- CVE-2016-4453: The vmsvga_fifo_run function allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command (bsc#982225)\n- CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggered an out-of-bounds read (bsc#982224)\n- CVE-2016-4480: The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen did not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might have allowed local guest OS users to gain privileges via a crafted mapping of memory (bsc#978295).\n- CVE-2016-4952: Out-of-bounds access issue in pvsci_ring_init_msg/data routines (bsc#981276)\n- CVE-2016-4962: The libxl device-handling allowed local OS guest administrators to cause a denial of service (resource consumption or management facility confusion) or gain host OS privileges by manipulating information in guest controlled areas of xenstore (bsc#979620)\n- CVE-2016-4963: The libxl device-handling allowed local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore (bsc#979670)\n- CVE-2016-5105: Stack information leakage while reading configuration (bsc#982024)\n- CVE-2016-5106: Out-of-bounds write while setting controller properties (bsc#982025)\n- CVE-2016-5107: Out-of-bounds read in megasas_lookup_frame() function (bsc#982026)\n- CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl function allowed local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call (bsc#982286)\n- CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode (bsc#982960)\n- CVE-2016-5337: The megasas_ctrl_get_info function allowed local guest OS administrators to obtain sensitive host memory information via vectors related to reading device control information (bsc#983973)\n- CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions allowed local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the host via vectors related to the information transfer buffer (bsc#983984)\n- CVE-2016-5403: virtio: unbounded memory allocation on host via guest leading to DoS (XSA-184) (bsc#990923)\n- 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)\n- CVE-2016-6351: The esp_do_dma function in hw/scsi/esp.c, when built with ESP/NCR53C9x controller emulation support, allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the host via vectors involving DMA read into ESP command buffer (bsc#990843).\n- CVE-2016-6833: A use-after-free issue in the VMWARE VMXNET3 NIC device support allowed privileged user inside guest to crash the Qemu instance resulting in DoS (bsc#994775).\n- CVE-2016-6834: A infinite loop during packet fragmentation in the VMWARE VMXNET3 NIC device support allowed privileged user inside guest to crash the Qemu instance resulting in DoS (bsc#994421).\n- CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC device support, causing an OOB read access (bsc#994625).\n- CVE-2016-6836: VMWARE VMXNET3 NIC device allowed privileged user inside the guest to leak information. It occured while processing transmit(tx) queue, when it reaches the end of packet (bsc#994761).\n- CVE-2016-6888: A integer overflow int the VMWARE VMXNET3 NIC device support, during the initialisation of new packets in the device, could have allowed a privileged user inside guest to crash the Qemu instance resulting in DoS (bsc#994772).\n- 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)\n- 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)\n- 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)\n- CVE-2016-7154: Use-after-free vulnerability in the FIFO event channel code in Xen allowed local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number (bsc#997731).\n\nThese non-security issues were fixed:\n- bsc#991934: Hypervisor crash in csched_acct\n- bsc#992224: During boot of Xen Hypervisor, failed to get contiguous memory for DMA\n- bsc#970135: New virtualization project clock test randomly fails on Xen \n- bsc#971949: xl: Support (by ignoring) xl migrate --live. xl migrations are always live\n- bsc#990970: Add PMU support for Intel E7-8867 v4 (fam=6, model=79)\n- bsc#985503: vif-route broken\n- bsc#978413: PV guest upgrade from sles11sp4 to sles12sp2 alpha3 failed on sles11sp4 xen host.\n- bsc#986586: Out of memory (oom) during boot on 'modprobe xenblk' (non xen kernel)\n- bsc#953339, bsc#953362, bsc#953518, bsc#984981: Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests to qemu-xen-upstream\n- bsc#958848: HVM guest crash at /usr/src/packages/BUILD/ xen-4.4.2-testing/obj/default/balloon/balloon.c:407\n- bsc#982695: xen-4.5.2 qemu fails to boot HVM guest from xvda \n- bsc#954872: script block-dmmd not working as expected\n- bsc#961600: : poor performance when Xen HVM domU configured with max memory \u003e current memory\n- bsc#979035: Restore xm migrate fixes for bsc#955399/ bsc#955399\n- bsc#963161: Windows VM getting stuck during load while a VF is assigned to it\n- bsc#976058: Xen error running simple HVM guest (Post Alpha 2 xen+qemu)\n- bsc#957986: Indirect descriptors are not compatible with Amazon block backend\n- bsc#973631: AWS EC2 kdump issue\n- bsc#964427: Discarding device blocks failed with input/output error\n","status":"published","published":"2016-10-13T15:12:40Z","modified":"2026-02-04T03:26:55.353348Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:2725-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n- 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)\n- 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)\n- CVE-2016-5403: Unbounded memory allocation allowed a guest administrator to cause a denial of service of the host (bsc#990923)\n- CVE-2016-6351: The esp_do_dma function in hw/scsi/esp.c, when built with ESP/NCR53C9x controller emulation support, allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the host via vectors involving DMA read into ESP command buffer (bsc#990843)\n- 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)\n- CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions allowed local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the host via vectors related to the information transfer buffer (bsc#983984)\n- CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode (bsc#982960)\n- CVE-2016-4453: The vmsvga_fifo_run function allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a VGA command (bsc#982225)\n- CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggered an out-of-bounds read (bsc#982224)\n- CVE-2014-3672: The qemu implementation in libvirt Xen allowed local guest OS users to cause a denial of service (host disk consumption) by writing to stdout or stderr (bsc#981264)\n- CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller (FSC) support did not properly check DMA length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command (bsc#980724)\n- CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI Controller (FSC) support did not properly check command buffer length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the host via unspecified vectors (bsc#980716)\n- CVE-2016-3710: The VGA module improperly performed bounds checking on banked access to video memory, which allowed local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the 'Dark Portal' issue (bsc#978164)\n- CVE-2016-4480: The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen did not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might have allowed local guest OS users to gain privileges via a crafted mapping of memory (bsc#978295)\n- CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping (bsc#974038)\n- CVE-2016-3158: The xrstor function did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188)\n- CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function, when the Stellaris ethernet controller is configured to accept large packets, allowed remote attackers to cause a denial of service (QEMU crash) via a large packet (bsc#975130)\n- CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the guest NIC is configured to accept large packets, allowed remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes (bsc#975138)\n\nThese non-security issues were fixed:\n- bsc#985503: vif-route broken \n- bsc#978413: PV guest upgrade from sles11sp4 to sles12sp2 alpha3 failed on sles11sp4 xen host.\n- bsc#954872: Script block-dmmd not working as expected - libxl: error: libxl_dm.c (another modification) \n- bsc#961600: Poor performance when Xen HVM domU configured with max memory \u003e current memory\n- bsc#963161: Windows VM getting stuck during load while a VF is assigned to it after upgrading to latest maintenance updates\n- bsc#976470: Xend fails to start \n- bsc#973631: AWS EC2 kdump issue\n","status":"published","published":"2016-11-04T10:24:00Z","modified":"2026-02-04T03:17:02.51693Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:3044-1","title":"Security update for xen","description":"\nxen was updated to fix several security issues.\n\nThese security issues were fixed:\n\n- CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host (bsc#1011652).\n- CVE-2016-9386: x86 null segments were not always treated as unusable allowing an unprivileged guest user program to elevate its privilege to that of the guest operating system. Exploit of this vulnerability is easy on Intel and more complicated on AMD (bsc#1009100)\n- CVE-2016-9382: x86 task switch to VM86 mode was mis-handled, allowing a unprivileged guest process to escalate its privilege to that of the guest operating system on AMD hardware. On Intel hardware a malicious unprivileged guest process can crash the guest (bsc#1009103)\n- CVE-2016-9383: The x86 64-bit bit test instruction emulation was broken, allowing a guest to modify arbitrary memory leading to arbitray code execution (bsc#1009107)\n- CVE-2016-9381: Improper processing of shared rings allowing guest administrators take over the qemu process, elevating their privilege to that of the qemu process (bsc#1009109)\n- CVE-2016-9380: Delimiter injection vulnerabilities in pygrub allowed  guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111)\n- CVE-2016-9379: Delimiter injection vulnerabilities in pygrub allowed guest administrators to obtain the contents of sensitive host files or delete the files (bsc#1009111)\n- CVE-2016-7777: Xen did not properly honor CR0.TS and CR0.EM, which allowed local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it (bsc#1000106)\n- CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1007157)\n- CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c in allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1005004)\n- CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1005005)\n- CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1003030)\n- CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1003032)\n- CVE-2016-6351: The esp_do_dma function in hw/scsi/esp.c, when built with ESP/NCR53C9x controller emulation support, allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the host via vectors involving DMA read into ESP command buffer (bsc#990843)\n\nThis non-security issue was fixed:\n\n- bsc#1000893: virsh setmem didn't allow to set current guest memory to max limit\n","status":"published","published":"2016-12-07T15:44:40Z","modified":"2026-02-04T04:40:18.728856Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"USN-3047-1","title":"qemu, qemu-kvm vulnerabilities","description":"Li Qiang discovered that QEMU incorrectly handled 53C9X Fast SCSI\ncontroller emulation. A privileged attacker inside the guest could use this\nissue to cause QEMU to crash, resulting in a denial of service, or possibly\nexecute arbitrary code on the host. In the default installation, when QEMU\nis used with libvirt, attackers would be isolated by the libvirt AppArmor\nprofile. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.\n(CVE-2016-4439, CVE-2016-4441, CVE-2016-5238, CVE-2016-5338, CVE-2016-6351)\n\nLi Qiang and Qinghao Tang discovered that QEMU incorrectly handled the\nVMWare VGA module. A privileged attacker inside the guest could use this\nissue to cause QEMU to crash, resulting in a denial of service, or possibly\nto obtain sensitive host memory. (CVE-2016-4453, CVE-2016-4454)\n\nLi Qiang discovered that QEMU incorrectly handled VMWARE PVSCSI paravirtual\nSCSI bus emulation support. A privileged attacker inside the guest could\nuse this issue to cause QEMU to crash, resulting in a denial of service.\nThis issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.\n(CVE-2016-4952)\n\nLi Qiang discovered that QEMU incorrectly handled MegaRAID SAS 8708EM2 Host\nBus Adapter emulation support. A privileged attacker inside the guest could\nuse this issue to cause QEMU to crash, resulting in a denial of service, or\npossibly to obtain sensitive host memory. This issue only applied to Ubuntu\n14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5105, CVE-2016-5106,\nCVE-2016-5107, CVE-2016-5337)\n\nIt was discovered that QEMU incorrectly handled certain iSCSI asynchronous\nI/O ioctl calls. An attacker inside the guest could use this issue to cause\nQEMU to crash, resulting in a denial of service, or possibly execute\narbitrary code on the host. In the default installation, when QEMU is used\nwith libvirt, attackers would be isolated by the libvirt AppArmor profile.\nThis issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.\n(CVE-2016-5126)\n\nZhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2016-5403)\n","status":"published","published":"2016-08-04T18:23:47Z","modified":"2026-02-10T04:41:01Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}