CVE-2022-2962

A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possib...

CVE-2022-2962

A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possib...

CVE-2022-2962: Uncontrolled Resource Consumption

A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possib...

NewStart CGSL MAIN 6.02 : qemu Multiple Vulnerabilities (NS-SA-2022-0067)

The remote NewStart CGSL host, running version MAIN 6.02, has qemu packages installed that are affected by multiple vulnerabilities: - A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPIC...

EulerOS Virtualization 2.9.1 : qemu (EulerOS-SA-2022-1598)

According to the versions of the qemu package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue...

CVE-2021-4206

A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursoralloc function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on th...

CVE-2021-4206

CVE-2021-4206 affects the QEMU QXL display device emulation. An integer overflow in cursor_alloc() can cause a small cursor object to be allocated and then trigger a heap-based buffer overflow, enabling a privileged guest user to crash the QEMU process on the host or potentiallyExecute arbitrary ...

CVE-2021-3638

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati2dblt routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QE...

Ubuntu 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-5307-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5307-1 advisory. Gaoning Pan discovered that QEMU incorrectly handled the floppy disk emulator. An attacker inside the guest could use this issue to cause QEM...

CVE-2021-3930

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in modesensepage if the 'page' argument was set to MODEPAGEALLS 0x3f. A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service conditio...

CVE-2021-3930: Off-by-one Error

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in modesensepage if the 'page' argument was set to MODEPAGEALLS 0x3f. A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service conditio...

VMware Workstation, Fusion and ESXi updates address a heap-overflow vulnerability (CVE-2021-22045)

3. VMware Workstation, Fusion and ESXi updates address a heap-overflow vulnerability CVE-2021-22045 The CD-ROM device emulation in VMware Workstation, Fusion and ESXi has a heap-overflow vulnerability. VMware has evaluated the severity of this issue to be in the Important severity range with a...

CVE-2021-22045: Out-of-bounds Write

VMware ESXi 7.0, 6.7 before ESXi670-202111101-SG and 6.5 before ESXi650-202110101-SG, VMware Workstation 16.2.0 and VMware Fusion 12.2.0 contains a heap-overflow vulnerability in CD-ROM device emulation. A malicious actor with access to a virtual machine with CD-ROM device emulation may be able t...

SUSE SLES12: qemu / qemu-arm / qemu-block-curl / qemu-block-iscsi / etc (SUSE-SU-2021:3653-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3653-1 advisory. Security issues fixed: - Fix out-of-bounds write in UAS USB Attached SCSI device emulation bsc1189702, CVE-2021-3713 - Fix heap...

SUSE: Security Advisory (SUSE-SU-2021:3653-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE-SU-2021:3613-1 Security update for qemu

This update for qemu fixes the following issues: Security issues fixed: - Fix heap use-after-free in virtionetreceivercu bsc1189938, CVE-2021-3748 - Fix out-of-bounds write in UAS USB Attached SCSI device emulation bsc1189702, CVE-2021-3713 - usbredir: free call on invalid pointer in bufpalloc...

openSUSE: Security Advisory for qemu (openSUSE-SU-2021:3604-1)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

Debian DSA-4980-1 : qemu - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4980 advisory. Multiple security issues were discovered in QEMU, a fast processor emulator, which could result in denial of service or the the execution of arbitrary code. For t...

CVE-2021-3713

An out-of-bounds write flaw was found in the UAS USB Attached SCSI device emulation of QEMU. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice-data3 and UASDevice-status3 fields. A malicious guest user could use this flaw to crash...

An EPYC escape: Case-study of a KVM breakout

Posted by Felix Wilhelm, Project Zero Introduction KVM for Kernel-based Virtual Machine is the de-facto standard hypervisor for Linux-based cloud environments. Outside of Azure, almost all large-scale cloud and hosting providers are running on top of KVM, turning it into one of the fundamental...