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send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.","status":"published","published":"2015-08-06T00:00:00Z","modified":"2026-02-04T04:00:21.340507Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:10.385269Z"},{"id":"DSA-3348-1","title":"qemu - security update","status":"published","published":"2015-09-02T00:00:00Z","modified":"2026-03-09T01:22:20.57551Z","updated_at":"2026-11-02T15:46:16.199525Z"},{"id":"DSA-3349-1","title":"qemu-kvm - security update","status":"published","published":"2015-09-02T00:00:00Z","modified":"2026-03-09T01:01:04.212619Z","updated_at":"2026-11-02T15:46:16.199525Z"},{"id":"MGASA-2015-0310","title":"Updated qemu package fixes security vulnerability","description":"Matt Tait discovered that QEMU incorrectly handled the virtual PCNET\ndriver. A malicious guest could use this issue to cause a denial of\nservice, or possibly execute arbitrary code on the host as the user\nrunning the QEMU process (CVE-2015-3209).\n\nKurt Seifried discovered that QEMU incorrectly handled certain temporary\nfiles. A local attacker could use this issue to cause a denial of service\n(CVE-2015-4037).\n\nJan Beulich discovered that the QEMU Xen code incorrectly restricted write\naccess to the host MSI message data field. A malicious guest could use\nthis issue to cause a denial of service (CVE-2015-4103).\n\nJan Beulich discovered that the QEMU Xen code incorrectly restricted\naccess to the PCI MSI mask bits. A malicious guest could use this issue to\ncause a denial of service (CVE-2015-4104).\n\nJan Beulich discovered that the QEMU Xen code incorrectly handled MSI-X\nerror messages. A malicious guest could use this issue to cause a denial\nof service (CVE-2015-4105).\n\nJan Beulich discovered that the QEMU Xen code incorrectly restricted write\naccess to the PCI config space. A malicious guest could use this issue to\ncause a denial of service, obtain sensitive information, or possibly\nexecute arbitrary code (CVE-2015-4106).\n\nA heap buffer overflow flaw was found in the way QEMU's IDE subsystem\nhandled I/O buffer access while processing certain ATAPI commands.\nA privileged guest user in a guest with the CDROM drive enabled could\npotentially use this flaw to execute arbitrary code on the host with the\nprivileges of the host's QEMU process corresponding to the guest\n(CVE-2015-5154).\n\nAn out-of-bounds memory access flaw, leading to memory corruption or\npossibly an information leak, was found in QEMU's pit_ioport_read()\nfunction. A privileged guest user in a QEMU guest, which had QEMU PIT\nemulation enabled, could potentially, in rare cases, use this flaw to\nexecute arbitrary code on the host with the privileges of the hosting QEMU\nprocess (CVE-2015-3214).\n\nQemu emulator built with the virtio-serial vmchannel support is vulnerable\nto a buffer overflow issue. It could occur while exchanging virtio control\nmessages between guest \u0026 the host. A malicious guest could use this flaw\nto corrupt few bytes of Qemu memory area, potentially crashing the Qemu\nprocess (CVE-2015-5745).\n","status":"published","published":"2015-08-11T20:22:53Z","modified":"2026-04-16T06:23:35.491063273Z","updated_at":"2026-11-02T15:49:39.792687Z"},{"id":"SUSE-SU-2016:1560-1","title":"Security update for qemu","description":"qemu was updated to fix 37 security issues.\n\nThese security issues were fixed:\n- CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)\n- CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)\n- CVE-2016-4952: Avoid OOB access in Vmware PV SCSI emulation (bsc#981266)\n- CVE-2015-8817: Avoid OOB access in PCI DMA I/O (bsc#969121)\n- CVE-2015-8818: Avoid OOB access in PCI DMA I/O (bsc#969122)\n- CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)\n- CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)\n- CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)\n- CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)\n- CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)\n- CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)\n- CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)\n- CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)\n- CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)\n- CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)\n- CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)\n- 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)\n- CVE-2014-3689: Fixed insufficient parameter validation in rectangle functions (bsc#901508)\n- 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).\n- CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).\n- CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).\n- 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).\n- CVE-2015-7549: PCI null pointer dereferences (bsc#958917).\n- CVE-2015-8504: VNC floating point exception (bsc#958491).\n- CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).\n- CVE-2015-8567: A guest repeatedly activating a vmxnet3 device can leak host memory (bsc#959386).\n- CVE-2015-8568: A guest repeatedly activating a vmxnet3 device can leak host memory (bsc#959386).\n- CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).\n- CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).\n- CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).\n- CVE-2015-8744: Incorrect l2 header validation could have lead to a crash via assert(2) call (bsc#960835).\n- CVE-2015-8745: Reading IMR registers could have lead to a crash via assert(2) call (bsc#960708).\n- CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).\n- CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).\n- CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).\n- CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).\n- CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).\n\nThis non-security issue was fixed\n- bsc#886378: qemu truncates vhd images in virt-rescue\n","status":"published","published":"2016-06-13T07:13:18Z","modified":"2026-02-04T03:44:42.289772Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:1698-1","title":"Security update for kvm","description":"kvm was updated to fix 33 security issues.\n\nThese security issues were fixed:\n- CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)\n- CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)\n- CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)\n- CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)\n- CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109) \n- CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)\n- CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)\n- CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)\n- CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)\n- CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)\n- CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)\n- CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)\n- CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)\n- 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)\n- CVE-2014-3689: Fixed insufficient parameter validation in rectangle functions (bsc#901508)\n- 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).\n- CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).\n- CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).\n- 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).\n- CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).\n- 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).\n- 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).\n- CVE-2015-7549: PCI null pointer dereferences (bsc#958917).\n- CVE-2015-8504: VNC floating point exception (bsc#958491).\n- CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).\n- CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).\n- CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).\n- CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).\n- CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).\n- CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).\n- CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).\n- CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).\n- CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).\n\nThis non-security issue was fixed:\n- Fix case of IDE interface needing busy status set before flush (bsc#936132)\n","status":"published","published":"2016-06-28T14:31:01Z","modified":"2026-02-04T03:07:16.951102Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:1703-1","title":"Security update for qemu","description":"qemu was updated to fix 29 security issues.\n\nThese security issues were fixed:\n- CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)\n- CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)\n- CVE-2016-4952: Avoid OOB access in Vmware PV SCSI emulation (bsc#981266)\n- CVE-2015-8817: Avoid OOB access in PCI dma I/O (bsc#969121)\n- CVE-2015-8818: Avoid OOB access in PCI dma I/O (bsc#969122)\n- CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)\n- CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)\n- CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)\n- CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)\n- CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)\n- CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)\n- CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)\n- CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)\n- CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)\n- CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)\n- CVE-2016-2197: Prevent AHCI NULL pointer dereference when using FIS CLB engine (bsc#964411)\n- CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).\n- CVE-2015-7549: PCI null pointer dereferences (bsc#958917).\n- CVE-2015-8504: VNC floating point exception (bsc#958491).\n- CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).\n- CVE-2015-8567: A guest repeatedly activating a vmxnet3 device can leak host memory (bsc#959386).\n- CVE-2015-8568: A guest repeatedly activating a vmxnet3 device can leak host memory (bsc#959386).\n- CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).\n- CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).\n- CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).\n- CVE-2015-8744: Incorrect l2 header validation could have lead to a crash via assert(2) call (bsc#960835).\n- CVE-2015-8745: Reading IMR registers could have lead to a crash via assert(2) call (bsc#960708).\n- CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).\n- CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).\n- CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).\n- CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).\n- CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).\n\nThis non-security issue was fixed\n- bsc#886378: qemu truncates vhd images in virt-rescue\n","status":"published","published":"2016-06-29T05:47:55Z","modified":"2026-02-04T04:36:14.909397Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"SUSE-SU-2016:1785-1","title":"Security update for kvm","description":"kvm was updated to fix 33 security issues.\n\nThese security issues were fixed:\n- CVE-2016-4439: Avoid OOB access in 53C9X emulation (bsc#980711)\n- CVE-2016-4441: Avoid OOB access in 53C9X emulation (bsc#980723)\n- CVE-2016-3710: Fixed VGA emulation based OOB access with potential for guest escape (bsc#978158)\n- CVE-2016-3712: Fixed VGa emulation based DOS and OOB read access exploit (bsc#978160)\n- CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)\n- CVE-2016-2538: Fixed potential OOB access in USB net device emulation (bsc#967969)\n- CVE-2016-2841: Fixed OOB access / hang in ne2000 emulation (bsc#969350)\n- CVE-2016-2858: Avoid potential DOS when using QEMU pseudo random number generator (bsc#970036)\n- CVE-2016-2857: Fixed OOB access when processing IP checksums (bsc#970037)\n- CVE-2016-4001: Fixed OOB access in Stellaris enet emulated nic (bsc#975128)\n- CVE-2016-4002: Fixed OOB access in MIPSnet emulated controller (bsc#975136)\n- CVE-2016-4020: Fixed possible host data leakage to guest from TPR access (bsc#975700)\n- CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)\n- 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)\n- CVE-2014-3689: Fixed insufficient parameter validation in rectangle functions (bsc#901508)\n- 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).\n- CVE-2015-5239: Integer overflow in vnc_client_read() and protocol_client_msg() (bsc#944463).\n- CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).\n- 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).\n- CVE-2015-5745: Buffer overflow in virtio-serial (bsc#940929).\n- 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).\n- 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).\n- CVE-2015-7549: PCI null pointer dereferences (bsc#958917).\n- CVE-2015-8504: VNC floating point exception (bsc#958491).\n- CVE-2015-8558: Infinite loop in ehci_advance_state resulting in DoS (bsc#959005).\n- CVE-2015-8613: Wrong sized memset in megasas command handler (bsc#961358).\n- CVE-2015-8619: Potential DoS for long HMP sendkey command argument (bsc#960334).\n- CVE-2015-8743: OOB memory access in ne2000 ioport r/w functions (bsc#960725).\n- CVE-2016-1568: AHCI use-after-free in aio port commands (bsc#961332).\n- CVE-2016-1714: Potential OOB memory access in processing firmware configuration (bsc#961691).\n- CVE-2016-1922: NULL pointer dereference when processing hmp i/o command (bsc#962320).\n- CVE-2016-1981: Potential DoS (infinite loop) in e1000 device emulation by malicious privileged user within guest (bsc#963782).\n- CVE-2016-2198: Malicious privileged guest user were able to cause DoS by writing to read-only EHCI capabilities registers (bsc#964413).\n\nThis non-security issue was fixed:\n- Fix case of IDE interface needing busy status set before flush (bsc#936132)\n","status":"published","published":"2016-07-11T11:31:17Z","modified":"2026-02-04T04:04:29.51983Z","updated_at":"2026-11-02T15:53:43.438985Z"},{"id":"USN-2724-1","title":"qemu, qemu-kvm vulnerabilities","description":"It was discovered that QEMU incorrectly handled a PRDT with zero complete\nsectors in the IDE functionality. A malicious guest could possibly use\nthis issue to cause a denial of service. This issue only affected Ubuntu\n12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-9718)\n\nDonghai Zhu discovered that QEMU incorrectly handled the RTL8139 driver.\nA malicious guest could possibly use this issue to read sensitive\ninformation from arbitrary host memory. (CVE-2015-5165)\n\nDonghai Zhu discovered that QEMU incorrectly handled unplugging emulated\nblock devices. A malicious guest could use this issue to cause a denial of\nservice, or possibly execute arbitrary code on the host as the user running\nthe QEMU process. In the default installation, when QEMU is used with\nlibvirt, attackers would be isolated by the libvirt AppArmor profile. This\nissue only affected Ubuntu 15.04. (CVE-2015-5166)\n\nQinghao Tang and Mr. Zuozhi discovered that QEMU incorrectly handled memory\nin the VNC display driver. A malicious guest could use this issue to cause\na denial of service, or possibly execute arbitrary code on the host as the\nuser running the QEMU process. In the default installation, when QEMU is\nused with libvirt, attackers would be isolated by the libvirt AppArmor\nprofile. This issue only affected Ubuntu 15.04. (CVE-2015-5225)\n\nIt was discovered that QEMU incorrectly handled the virtio-serial device.\nA malicious guest could use this issue to cause a denial of service, or\npossibly execute arbitrary code on the host as the user running the QEMU\nprocess. In the default installation, when QEMU is used with libvirt,\nattackers would be isolated by the libvirt AppArmor profile. This issue\nonly affected Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-5745)\n","status":"published","published":"2015-08-27T12:00:41Z","modified":"2026-02-10T04:40:55Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}