kernel: vhost-net: guest to host kernel escape during migration

A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this fla...

openSUSE Security Update : qemu (openSUSE-2019-1274)

This update for qemu fixes the following issues : Security issues fixed : - CVE-2019-9824: Fixed information leak in slirp bsc1129622. - CVE-2019-8934: Added method to specify whether or not to expose certain ppc64 hostinformation bsc1126455. - CVE-2019-3812: Fixed Out-of-bounds memory access and...

Security update for qemu (important)

openSUSE Security Update: Security update for qemu Announcement ID: openSUSE-SU-2019:1274-1 Rating: important References: 1118900 1125721 1126455 1129622 1130675 1131955 Cross-References: CVE-2018-20815 CVE-2019-3812 CVE-2019-8934 CVE-2019-9824 Affected Products: openSUSE Leap 42.3 An update that...

Denial Of Service (DoS)

QEMU is vulnerable to denial of service. Quick emulatorQemu built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement...

SUSE-SU-2018:2565-1 Security update for qemu

This update for qemu fixes the following issues: These security issues were fixed: - CVE-2018-12617: qmpguestfileread had an integer overflow that could have been exploited by sending a crafted QMP command including guest-file-read with a large count value to the agent via the listening socket...

Qemu: virtio: null pointer dereference in virtqueu_map_desc

The virtqueuemapdesc function in hw/virtio/virtio.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service NULL pointer dereference and QEMU process crash via a large I/O descriptor buffer length value...

Qemu: virtio: null pointer dereference in virtqueu_map_desc

The virtqueuemapdesc function in hw/virtio/virtio.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service NULL pointer dereference and QEMU process crash via a large I/O descriptor buffer length value...

RedHat Update for qemu-kvm RHSA-2017:0309-01

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

OracleVM 3.4 : qemu-kvm (OVMSA-2017-0043)

The remote OracleVM system is missing necessary patches to address critical security updates : - kvm-cirrusvga-fix-division-by-0-for-color-expansion-rop .patch - kvm-cirrusvga-fix-off-by-one-in-blitregionisunsafe.p atch - kvm-display-cirrus-check-vga-bits-per-pixel-bpp-value.pa tch -...

RHEL 6 : qemu-kvm (RHSA-2017:0309)

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

qemu-kvm security and bug fix update

0.12.1.2-2.491.el68.6 - kvm-cirrusvga-fix-division-by-0-for-color-expansion-rop.patch bz1418230 bz1419416 - kvm-cirrusvga-fix-off-by-one-in-blitregionisunsafe.patch bz1418230 bz1419416 - kvm-display-cirrus-check-vga-bits-per-pixel-bpp-value.patch bz1418230 bz1419416 -...

CentOS 7 : qemu-kvm (CESA-2017:0083)

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CV...

Scientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20170117)

Security Fixes : - An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user...

Low: Red Hat Security Advisory: qemu-kvm security and bug fix update

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CV...

DEBIAN-CVE-2016-7422

The virtqueuemapdesc function in hw/virtio/virtio.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service NULL pointer dereference and QEMU process crash via a large I/O descriptor buffer length value...

Buffer overflow

The virtqueuemapdesc function in hw/virtio/virtio.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service infinite loop and QEMU process crash via a zero length for the descriptor buffer...

Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

Quick Emulator QEMU built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement results in unbounded memory allocation ...

Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

Quick Emulator QEMU built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement results in unbounded memory allocation ...

Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

Quick Emulator QEMU built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement results in unbounded memory allocation ...

Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

Quick Emulator QEMU built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement results in unbounded memory allocation ...