{"id":"CVE-2017-2633","aliases":["BELL-CVE-2017-2633","DEBIAN-CVE-2017-2633","EUVD-2017-11794","GHSA-c46f-47cq-c2fg","RHSA-2017:1205","RHSA-2017:1206","RHSA-2017:1441","RHSA-2017:1856","SUSE-SU-2017:1080-1","SUSE-SU-2017:1081-1","SUSE-SU-2017:1147-1","SUSE-SU-2017:2969-1","SUSE-SU-2018:0019-1","SUSE-SU-2018:0039-1","UBUNTU-CVE-2017-2633","USN-3261-1"],"status":"published","title":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC...","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","severity":{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03075,"percentile":0.87753,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120","CWE-125","CWE-787"],"published":"2017-02-22T00:00:00Z","modified":"2026-10-24T10:30:17Z","fixes":[{"ecosystem":"Debian:12","package":"qemu","fixed_in":["2.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["2.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["2.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"qemu","fixed_in":["2.0.0+dfsg-2ubuntu1.33"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Red 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tps://www.suse.com/security/cve/CVE-2017-8309","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9330","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9373","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9375","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9503","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180019-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1068032","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5715","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180039-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-2633","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3261-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-7907","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-8667","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-8669","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9381","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9602","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9603","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9776","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9845","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9846","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9907","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9908","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9911","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9912","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9913","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9914","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9915","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9916","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9921","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-9922","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-10028","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-10029","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-10155","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-2615","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-2620","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5525","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5526","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5552","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5578","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5579","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5667","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5856","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5857","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5898","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5973","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-5987","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-6505","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-2633","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2018-07-27T19:00:00Z","modified":"2024-08-05T14:02:06.898Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:33:15.543086Z"}],"euvd":[{"id":"EUVD-2017-11794","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2018-07-27T19:00:00Z","modified":"2024-08-05T14:02:06Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T02:39:20.499267Z"}],"ghsa":[{"id":"GHSA-c46f-47cq-c2fg","title":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC...","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2022-05-13T01:36:52Z","modified":"2023-02-01T05:08:46Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:50:51.059157Z"}],"nvd":[{"id":"CVE-2017-2633","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2018-07-27T19:29:00.533Z","modified":"2026-06-17T01:16:33.227Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-120","CWE-125","CWE-787"],"updated_at":"2026-11-02T14:04:18.679411Z"}],"osv":[{"id":"BELL-CVE-2017-2633","title":"CVE-2017-2633 does not affect BellSoft software","status":"withdrawn","published":"2018-07-27T19:29:00Z","modified":"2026-01-26T09:48:06.987913Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:14.137943Z"},{"id":"CVE-2017-2633","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2018-07-27T19:29:00.533Z","modified":"2026-10-24T10:30:17.728334639Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:05.486486Z"},{"id":"DEBIAN-CVE-2017-2633","description":"An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. 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This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.","status":"published","published":"2017-02-22T00:00:00Z","modified":"2026-02-04T02:53:31.029261Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:54:14.977781Z"},{"id":"SUSE-SU-2017:1080-1","title":"Security update for xen","description":"\nThis update for xen fixes the following issues:\n\nThese security issues were fixed:\n\n- CVE-2017-7228: Broken check in memory_exchange() permited PV guest breakout (bsc#1030442).\n- XSA-206: Unprivileged guests issuing writes to xenstore were able to stall progress of the control domain or driver domain, possibly leading to a Denial of Service (DoS) of the entire host (bsc#1030144).\n- CVE-2017-6505: The ohci_service_ed_list function in hw/usb/hcd-ohci.c allowed local guest OS users to cause a denial of service (infinite loop) via vectors involving the number of link endpoint list descriptors (bsc#1028235).\n- CVE-2017-6414: Memory leak in the vcard_apdu_new function in card_7816.c in libcacard allowed local guest OS users to cause a denial of service (host memory consumption) via vectors related to allocating a new APDU object (bsc#1027570).\n- CVE-2017-2633: The VNC display driver support was vulnerable to an out-of-bounds memory access issue. A user/process inside guest could use this flaw to cause DoS (bsc#1026636).\n- CVE-2016-9603: A privileged user within the guest VM can cause a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028655).\n\nThese non-security issues were fixed:\n\n- bsc#1022555: Timeout in 'execution of /etc/xen/scripts/block add'\n- bsc#1029827: Forward port xenstored\n","status":"published","published":"2017-04-20T13:47:19Z","modified":"2026-02-04T03:25:28.778948Z","updated_at":"2026-11-02T15:53:43.83457Z"},{"id":"SUSE-SU-2017:1081-1","title":"Security update for xen","description":"\nThis update for xen fixes the following issues:\n\nThese security issues were fixed:\n\n- CVE-2017-7228: Broken check in memory_exchange() permited PV guest breakout (bsc#1030442).\n- XSA-206: Unprivileged guests issuing writes to xenstore were able to stall progress of the control domain or driver domain, possibly leading to a Denial of Service (DoS) of the entire host (bsc#1030144).\n- CVE-2016-9603: A privileged user within the guest VM can cause a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028655).\n- CVE-2017-6414: Memory leak in the vcard_apdu_new function in card_7816.c in libcacard allowed local guest OS users to cause a denial of service (host memory consumption) via vectors related to allocating a new APDU object (bsc#1027570).\n- CVE-2017-6505: The ohci_service_ed_list function in hw/usb/hcd-ohci.c allowed local guest OS users to cause a denial of service (infinite loop) via vectors involving the number of link endpoint list descriptors (bsc#1028235).\n- CVE-2017-2633: The VNC display driver support was vulnerable to an out-of-bounds memory access issue. A user/process inside guest could use this flaw to cause DoS (bsc#1026636).\n\nThese non-security issues were fixed:\n\n- bsc#1022555: Timeout in 'execution of /etc/xen/scripts/block add'\n- bsc#1029827: Forward port xenstored\n","status":"published","published":"2017-04-20T13:47:43Z","modified":"2026-02-04T04:16:53.631257Z","updated_at":"2026-11-02T15:53:43.83457Z"},{"id":"SUSE-SU-2017:1147-1","title":"Security update for xen","description":"\nThis update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- A malicious 64-bit PV guest may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks by placing a IRET hypercall in the middle of a multicall batch (XSA-213, bsc#1034843)\n- A malicious pair of guests may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks because of a missing check when transfering pages via GNTTABOP_transfer (XSA-214, bsc#1034844).\n- CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions (bsc#1034994).\n- CVE-2016-9603: A privileged user within the guest VM could have caused a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028655)\n\nThese non-security issues were fixed:\n\n- bsc#1027519: Missing upstream bug fixes\n- bsc#1015348: libvirtd does not start during boot\n- bsc#1022555: Timeout in 'execution of /etc/xen/scripts/block add\n","status":"published","published":"2017-05-02T12:48:45Z","modified":"2025-05-02T04:05:42.051843Z","updated_at":"2026-11-02T15:53:43.83457Z"},{"id":"SUSE-SU-2017:2969-1","title":"Security update for qemu","description":"This update for qemu fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063122)\n- CVE-2017-2633: The VNC display driver support was vulnerable to an out-of-bounds memory access issue. A user/process inside guest could use this flaw to cause DoS (bsc#1026612)\n- CVE-2017-15038: Race condition in the v9fs_xattrwalk function local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes (bsc#1062069)\n- CVE-2017-14167: Integer overflow in the load_multiboot function allowed local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write (bsc#1057585)\n- CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP options string (bsc#1049381)\n- CVE-2017-11334: The address_space_write_continue function allowed local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area (bsc#1048902)\n- CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056334)\n- CVE-2017-5973: A infinite loop while doing control transfer in xhci_kick_epctx allowed privileged user inside the guest to crash the host process resulting in DoS (bsc#1025109)\n- CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks function in hw/sd/sdhci.c allowed local OS guest privileged users to cause a denial of service (infinite loop and QEMU process crash) via vectors involving the transfer mode register during multi block transfer (bsc#1025311)\n- CVE-2017-6505: The ohci_service_ed_list function allowed local guest OS users to cause a denial of service (infinite loop) via vectors involving the number of link endpoint list descriptors (bsc#1028184)\n- CVE-2016-9603: A privileged user within the guest VM could have caused a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028656)\n- CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions (bsc#1034908)\n- CVE-2017-7980: An out-of-bounds r/w access issues in the Cirrus CLGD 54xx VGA Emulator support allowed privileged user inside guest to use this flaw to crash the Qemu process resulting in DoS or potentially execute arbitrary code on a host with privileges of Qemu process on the host (bsc#1035406)\n- CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest OS privileged users to cause a denial of service (infinite loop and CPU consumption) via the message ring page count (bsc#1036211)\n- CVE-2017-9375: The USB xHCI controller emulator support was vulnerable to an infinite recursive call loop issue, which allowed a privileged user inside guest to crash the Qemu process resulting in DoS (bsc#1042800)\n- CVE-2017-9373: The IDE AHCI Emulation support was vulnerable to a host memory leakage issue, which allowed a privileged user inside guest to leak host memory resulting in DoS (bsc#1042801)\n- CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value (bsc#1042159)\n- CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture (bsc#1037242)\n- CVE-2017-7493: The VirtFS, host directory sharing via Plan 9 File System(9pfs) support, was vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could have used this flaw to escalate their privileges inside guest (bsc#1039495)\n- CVE-2016-9602: The VirtFS host directory sharing via Plan 9 File System(9pfs) support was vulnerable to an improper link following issue which allowed a privileged user inside guest to access host file system beyond the shared folder and potentially escalating their privileges on a host (bsc#1020427)\n- CVE-2017-5579: The 16550A UART serial device emulation support was vulnerable to a memory leakage issue allowing a privileged user to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1021741)\n- CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation support was vulnerable to a null pointer dereference issue which allowed a privileged user inside guest to crash the Qemu process on the host resulting in DoS (bsc#1043296)\n- CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt (bsc#1046636)\n- CVE-2017-10806: Stack-based buffer overflow allowed local guest OS users to cause a denial of service (QEMU process crash) via vectors related to logging debug messages (bsc#1047674)\n- CVE-2016-9602: The VirtFS host directory sharing via Plan 9 File System(9pfs) support was vulnerable to an improper link following issue which allowed a privileged user inside guest to access host file system beyond the shared folder and potentially escalating their privileges on a host (bsc#1020427)\n- CVE-2017-7377: The v9fs_create and v9fs_lcreate functions in hw/9pfs/9p.c allowed local guest OS privileged users to cause a denial of service (file descriptor or memory consumption) via vectors related to an already in-use fid (bsc#1032075)\n- CVE-2017-8086: A memory leak in the v9fs_list_xattr function in hw/9pfs/9p-xattr.c allowed local guest OS privileged users to cause a denial of service (memory consumption) via vectors involving the orig_value variable (bsc#1035950)\n- CVE-2017-7471: The VirtFS host directory sharing via Plan 9 File System(9pfs) support was vulnerable to an improper access control issue which allowed a privileged user inside guest to access host file system beyond the shared folder and potentially escalating their privileges on a host (bsc#1034866)\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#994418)\n- CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC device support, causing an OOB read access (bsc#994605)\n- Fix privilege escalation in TCG mode (bsc#1030624)\n\nThis non-security issue wsa fixed:\n\n* bsc#1045035: Fix regression introduced by former virtfs security fixes \n","status":"published","published":"2017-11-09T15:17:28Z","modified":"2026-02-04T03:30:24.008774Z","updated_at":"2026-11-02T15:53:44.209561Z"},{"id":"SUSE-SU-2018:0019-1","title":"Security update for kvm","description":"\n\nThis update for kvm fixes the following issues:\n\nAlso a mitigation for a security flaw has been applied:\n\n- CVE-2017-5715: QEMU was updated to allow passing through new MSR and CPUID flags from \n  the host VM to the CPU, to allow enabling/disabling branch prediction features in the\n  Intel CPU. (bsc#1068032)\n\nSecurity fixes have been applied:\n\n- CVE-2017-2633: Fix various out of bounds access issues in the QEMU vnc infrastructure (bsc#1026612)\n","status":"published","published":"2018-01-04T12:57:52Z","modified":"2026-02-04T02:36:51.128514Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0039-1","title":"Security update for kvm","description":"\n\nThis update for kvm fixes the following issues:\n\nA security flaw mitigation has been applied:\n\n- CVE-2017-5715: QEMU was updated to allow passing through new MSR and CPUID flags from \n  the host VM to the CPU, to allow enabling/disabling branch prediction features in the\n  Intel CPU. (bsc#1068032)\n\nAlso a security fix has been applied:\n\n- CVE-2017-2633: Fix various out of bounds access issues in the QEMU vnc infrastructure (bsc#1026612)\n","status":"published","published":"2018-01-08T12:27:20Z","modified":"2025-05-02T04:06:45.411025Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"USN-3261-1","title":"qemu vulnerabilities","description":"Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU\ndevice. An attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n16.04 LTS and Ubuntu 16.10. (CVE-2016-10028, CVE-2016-10029)\n\nLi Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2016-10155)\n\nLi Qiang discovered that QEMU incorrectly handled the i.MX Fast Ethernet\nController. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. This issue only\naffected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7907)\n\nIt was discovered that QEMU incorrectly handled the JAZZ RC4030 device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2016-8667)\n\nIt was discovered that QEMU incorrectly handled the 16550A UART device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2016-8669)\n\nIt was discovered that QEMU incorrectly handled the shared rings when used\nwith Xen. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service, or possibly execute\narbitrary code on the host. (CVE-2016-9381)\n\nJann Horn discovered that QEMU incorrectly handled VirtFS directory\nsharing. A privileged attacker inside the guest could use this issue to\naccess files on the host file system outside of the shared directory and\npossibly escalate their privileges. In the default installation, when QEMU\nis used with libvirt, attackers would be isolated by the libvirt AppArmor\nprofile. (CVE-2016-9602)\n\nGerd Hoffmann discovered that QEMU incorrectly handled the Cirrus VGA\ndevice when being used with a VNC connection. A privileged attacker inside\nthe guest could use this issue to cause QEMU to crash, resulting in a\ndenial of service, or possibly execute arbitrary code on the host. In the\ndefault installation, when QEMU is used with libvirt, attackers would be\nisolated by the libvirt AppArmor profile. (CVE-2016-9603)\n\nIt was discovered that QEMU incorrectly handled the ColdFire Fast Ethernet\nController. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2016-9776)\n\nLi Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An\nattacker inside the guest could use this issue to cause QEMU to leak\ncontents of host memory. This issue only affected Ubuntu 16.04 LTS and\nUbuntu 16.10. (CVE-2016-9845, CVE-2016-9908)\n\nLi Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. This issue only affected Ubuntu 16.04 LTS\nand Ubuntu 16.10. (CVE-2016-9846, CVE-2016-9912, CVE-2017-5552,\nCVE-2017-5578, CVE-2017-5857)\n\nLi Qiang discovered that QEMU incorrectly handled the USB redirector. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. This issue only affected Ubuntu 16.04 LTS\nand Ubuntu 16.10. (CVE-2016-9907)\n\nLi Qiang discovered that QEMU incorrectly handled USB EHCI emulation. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2016-9911)\n\nLi Qiang discovered that QEMU incorrectly handled VirtFS directory sharing.\nA privileged attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2016-9913, CVE-2016-9914,\nCVE-2016-9915, CVE-2016-9916)\n\nQinghao Tang, Li Qiang, and Jiangxin discovered that QEMU incorrectly\nhandled the Cirrus VGA device. A privileged attacker inside the guest could\nuse this issue to cause QEMU to crash, resulting in a denial of service.\n(CVE-2016-9921, CVE-2016-9922)\n\nWjjzhang and Li Qiang discovered that QEMU incorrectly handled the Cirrus\nVGA device. A privileged attacker inside the guest could use this issue to\ncause QEMU 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.\n(CVE-2017-2615)\n\nIt was discovered that QEMU incorrectly handled the Cirrus VGA device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service, or possibly execute arbitrary code\non the host. In the default installation, when QEMU is used with libvirt,\nattackers would be isolated by the libvirt AppArmor profile.\n(CVE-2017-2620)\n\nIt was discovered that QEMU incorrectly handled VNC connections. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2017-2633)\n\nLi Qiang discovered that QEMU incorrectly handled the ac97 audio device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2017-5525)\n\nLi Qiang discovered that QEMU incorrectly handled the es1370 audio device.\nA privileged attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2017-5526)\n\nLi Qiang discovered that QEMU incorrectly handled the 16550A UART device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2017-5579)\n\nJiang Xin discovered that QEMU incorrectly handled SDHCI device emulation.\nA privileged attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service, or possibly execute arbitrary\ncode on the host. In the default installation, when QEMU is used with\nlibvirt, attackers would be isolated by the libvirt AppArmor profile.\n(CVE-2017-5667)\n\nLi Qiang discovered that QEMU incorrectly handled the MegaRAID SAS device.\nA privileged attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2017-5856)\n\nLi Qiang discovered that QEMU incorrectly handled the CCID Card device. A\nprivileged attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2017-5898)\n\nLi Qiang discovered that QEMU incorrectly handled USB xHCI controller\nemulation. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2017-5973)\n\nJiang Xin and Wjjzhang discovered that QEMU incorrectly handled SDHCI\ndevice emulation. A privileged attacker inside the guest could use this\nissue to cause QEMU to crash, resulting in a denial of service.\n(CVE-2017-5987)\n\nLi Qiang discovered that QEMU incorrectly handled USB OHCI controller\nemulation. A privileged attacker inside the guest could use this issue to\ncause QEMU to hang, resulting in a denial of service. (CVE-2017-6505)\n","status":"published","published":"2017-04-20T18:33:13Z","modified":"2026-02-10T04:41:06Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}