QEMU 缓冲区错误漏洞

QEMU Quick Emulator is a set of simulation processor software by Fabrice Bellard, a French individual developer. The software is fast and cross-platform. A security vulnerability exists in QEMU for ATI VGA, which stems from a memory access out-of-bounds flaw found in QEMU's ATI VGA device...

The vulnerability of the `virtio_gpu_set_scanout` function in the `hw/display/virtio-gpu.c` component of the QEMU hardware emulation software occurs due to a lack of memory release mechanism before deleting the last reference. This allows a malicious actor to trigger a service failure.

The vulnerability of the virtiogpusetscanout function in the hw/display/virtio-gpu.c component of the QEMU hardware emulation software is related to a lack of a mechanism for freeing memory before deleting the last pointer. Exploiting this vulnerability allows an attacker to trigger a service...

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...

OESA-2021-1241 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host,...

QEMU: ide: atapi: OOB access while processing read commands

An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block addressLBA is set to an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in a denial of service...

Amazon Linux 2 : qemu (ALAS-2021-1671)

The version of qemu installed on the remote host is prior to 3.1.0-8. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1671 advisory. A heap buffer overflow flaw was found in the iSCSI support of QEMU. This flaw could lead to an out-of- bounds read access and...

SUSE SLES12: qemu / qemu-arm / qemu-block-curl / qemu-block-iscsi / etc (SUSE-SU-2021:1947-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1947-1 advisory. - Fix OOB access during mmio operations CVE-2020-13754, bsc1172382 - Fix out-of-bounds read information disclosure in...

SUSE SLES11 Security Update : xen (SUSE-SU-2020:14557-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14557-1 advisory. - A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing...

A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. This flaw allows a privileged guest user to crash the QEMU process on the host resulting in a denial of service. The highest threat from this vulnerability is to system availability.

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SUSE: Security Advisory (SUSE-SU-2019:0875-1)

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: Security Advisory (SUSE-SU-2012:1044-1)

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: Security Advisory (SUSE-SU-2016:3044-1)

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: Security Advisory (SUSE-SU-2015:0889-2)

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: Security Advisory (SUSE-SU-2012:1205-1)

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: Security Advisory (SUSE-SU-2019:13921-1)

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...

QEMU: ide: atapi: OOB access while processing read commands

An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block addressLBA is set to an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in a denial of service...

libtpms stack corruption vulnerability

libtpms is an application. Library that provides software emulation of trusted platform modules TPM 1.2 and TPM 2.0. libtpms has a security vulnerability that stems from a stack corruption bug that could lead to SIGBUS bad memory access and termination of swtpm. No detailed vulnerability details...

QEMU code issue vulnerability (CNVD-2021-39676)

QEMU Quick Emulator is a set of simulation processor software by Fabrice Bellard, a French individual developer. The software is fast and cross-platform. A code issue vulnerability exists in QEMU, which stems from a found a division by zero issue in the dwc2handlepacket handler package in the...

UBUNTU-CVE-2020-35503

A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasascommandcancelled callback function while dropping a SCSI request. This flaw allows a privileged guest user to crash the QEMU...

CVE-2020-35503

CVE-2020-35503 affects QEMU’s megasas-gen2 SCSI host bus adapter emulation. A NULL pointer dereference in megasas_command_cancelled() during dropping a SCSI request can crash the QEMU process on the host, causing a denial of service. The description specifies this is a local/privileged-guest flaw...