CVE-2016-5403

CVE-2016-5403 affects QEMU’s virtio path (virtqueue_pop in hw/virtio/virtio.c). A local guest OS administrator can cause a denial of service via unbounded memory allocation by submitting virtqueue requests without waiting for completion, potentially crashing the QEMU process. Public postings acro...

CVE-2016-9921

According to connected sources, CVE-2016-9921 affects QEMU with Cirrus CLGD 54xx VGA Emulator. The root cause is a divide-by-zero in cirrus_do_copy when Cirrus VGA graphics mode is VGA, which can be triggered during VGA data copying. Impact is guest-privileged code causing a host DoS by crashing ...

CVE-2016-3710

CVE-2016-3710 : A bounds-checking flaw in QEMU’s VGA module (VBE read/write via I/O ports) allows a privileged guest to modify banked video memory and execute arbitrary code on the host with QEMU process privileges. Root cause: out-of-bounds read/write in VGA bank access. Impact: potential host c...

CVE-2016-1568

CVE-2016-1568 is a use-after-free in QEMU’s AHCI emulation (hw/ide/ahci.c) when IDE AHCI Emulation is enabled. A guest user can cause a denial of service (QEMU process crash) and potentially execute arbitrary code via an invalid AHCI NCQ AIO command. The issue is triggered by use-after-free in NC...

CVE-2016-8576

CVE-2016-8576 affects QEMU’s USB xHCI emulation. The vulnerability is in xhci_ring_fetch (hw/usb/hcd-xhci.c), where failure to limit the number of TRBs can be exploited by a local privileged guest to cause an infinite loop and a DoS of the QEMU process. The initial documents do not specify exploi...

CVE-2016-2857

CVE-2016-2857 is a QEMU vulnerability in the IP checksum routines: the net_checksum_calculate function in net/checksum.c permits local (guest) users to trigger an out-of-bounds heap read, crashing the QEMU process via a crafted packet payload length. Multiple Nessus/MIRACLE-Linux advisories refer...

CVE-2016-8909

CVE-2016-8909 is an issue in QEMU’s Intel High Definition Audio emulation. The vulnerability exists in the intel_hda_xfer function (hw/audio/intel-hda.c) where an entry with the same value for buffer length and pointer position can be supplied by a local attacker (local guest OS administrator), l...

CVE-2015-1779

CVE-2015-1779 affects QEMU with the VNC websocket frame decoder. The issue allows a remote attacker to cause a denial of service by sending oversized websocket payloads or HTTP headers, exhausting CPU and memory. Impact is observed when an attacker accesses a guest’s VNC console over the network....

CVE-2016-9911

CVE-2016-9911 (QEMU) : A memory leak vulnerability in QEMU built with USB EHCI emulation. The leak occurs while processing packet data in ehci_init_transfer, allowing a guest user/process to leak host memory and potentially cause a DoS on the host. The available connected documents confirm the pr...

CVE-2016-8910

CVE-2016-8910 affects QEMU: the rtl8139_cplus_transmit function in hw/net/rtl8139.c can allow a local privileged user to cause a denial of service (infinite loop/CPU usage) by failing to limit the ring descriptor count. No public details on patch/version are provided in the connected documents.

CVE-2016-5126

Summary of CVE-2016-5126 family in Debian DLA-1927-1 (qemu security update) Debian DLA-1927-1 documents multiple QEMU vulnerabilities, including CVE-2016-5126 (heap-based buffer overflow in iscsi_aio_ioctl in block/iscsi.c) which allows a local guest user to crash the QEMU process or potentially ...

CVE-2015-7512

CVE-2015-7512 is a buffer overflow in the PC-Net II Ethernet controller emulation (hw/net/pcnet.c) of QEMU. The flaw occurs when handling packets for guests with a larger MTU, allowing a remote attacker to trigger a denial of service (guest OS crash) or potentially execute arbitrary code. Connect...

CVE-2016-8669

CVE-2016-8669 affects QEMU: the serial_update_parameters function in hw/char/serial.c can be triggered by a divider value greater than baud base to cause a divide-by-zero and QEMU process crash. It is a local privilege vulnerability (guest to host) with denial of service as the impact. The connec...

CVE-2016-4020

CVE-2016-4020 : In QEMU, the patch_instruction function in hw/i386/kvmvapic.c fails to initialize imm32, enabling a local guest OS administrator to leak host stack memory via the Task Priority Register (TPR). Several advisories (Debian DLA-574-1, CentOS/CESA-2017:1856, Gentoo GLSA-201609-01) docu...

CVE-2016-9907

The CVE-2016-9907 issue affects Quick Emulator (QEMU) built with usb-guest USB redirector support. It describes a memory-leak flaw that can occur while destroying the usbredir device (usbredir_handle_destroy), allowing a guest user to leak host memory and potentially cause DoS on the host. Red Ha...

CVE-2016-6835

CVE-2016-6835 — QEMU vmxnet_tx_pkt_parse_headers vulnerability in hw/net/vmxnet_tx_pkt.c allows a local guest OS administrator to trigger a denial of service via a buffer over-read caused by failing to check the IP header length. This is a local, attacker-privileged issue inside the guest, with p...

CVE-2016-6888

CVE-2016-6888 in QEMU (net_tx_pkt_init in hw/net/net_tx_pkt.c) has an integer overflow when handling the maximum fragmentation count, triggering an unchecked multiplication and a NULL pointer dereference. This allows a local privileged user/guest to cause a denial of service (QEMU process crash)....

CVE-2016-7466

CVE-2016-7466 is a memory-leak denial-of-service issue in QEMU’s USB xHCI emulation when MSI-X is used. The usb_xhci_exit path can leak memory during repeated USB unplug actions, allowing a local privileged user (guest) to exhaust host memory or crash the QEMU process. Public details confirm the ...

CVE-2016-7422

CVE-2016-7422 affects QEMU’s virtio/virtio.c: virtqueue_map_desc allows a local guest OS administrator to trigger a NULL pointer dereference by using a large I/O descriptor buffer length, leading to QEMU process crash. Remediation in connected docs shows fixes via rebases to QEMU 2.9.0 (RHSA-2017...