OESA-2021-1012 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system for example a PC, including one or several processors and various peripherals. It can be used to launch...

QEMU Denial of Service Vulnerability (CNVD-2021-03259)

QEMU Quick Emulator is a set of simulation processor software by Fabrice Bellard, a French individual developer. The software is fast and cross-platform. QEMU 4.1.0 suffers from a security vulnerability that stems from an out-of-bounds read flaw found in the ATI VGA implementation. It occurs in t...

Out-of-bounds

In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the aticursordefine routine while handling MMIO write operations through the atimmwrite callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service...

UBUNTU-CVE-2019-20808

In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the aticursordefine routine while handling MMIO write operations through the atimmwrite callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service...

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

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Denial Of Service (DoS)

QEMU is vulnerable to denial of service. An attacker can engage a use-after-free by sending packet data address to e1000e's MMIO causing a denial of service...

DEBIAN-CVE-2020-27821

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting i...

CVE-2020-27821

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting i...

Out-of-bounds

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting i...

CVE-2020-27821

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting i...

Denial Of Service (DoS)

qemu is vulnerable to denial of service DoS. The vulnerability exists in hw/pci/msix.c, allowing a malicious user to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation...

QEMU 缓冲区错误漏洞

QEMU is a suite of analog processor software. A buffer overflow vulnerability exists in QEMU msixtablemmiowrite. An attacker could exploit the vulnerability to crash the QEMU process on the host, resulting in a denial of service...

Important: kernel

Issue Overview: An issue in the HID driver in the Linux kernel may lead to invalid memory access. CVE-2022-20565 In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in...

QEMU >= 4.0.0, <= 5.1.0 DoS Vulnerability

QEMU is prone to a denial of service DoS vulnerability. Copyright C 2020 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 c...

DEBIAN-CVE-2020-24352

An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA device implementation. This flaw occurs in the ati2dblt routine in hw/display/ati2d.c while handling MMIO write operations through the atimmwrite callback. A malicious guest could use this flaw ...

The x86 emulator in KVM 83 does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) in determining the memory access available to CPL3 code which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region a related issue to CVE-2010-0306.

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Denial Of Service (DoS)

QEMU is vulnerable to denial of service. An integer overflow in the SM501 display driver implementation allows an attacker to crash the QEMU process in sm5012doperation in hw/display/sm501.c on the host. The vulnerability exists in the COPYAREA macro while handling MMIO write operations through t...

In QEMU through 5.0.0 an integer overflow was found in the SM501 display driver implementation. This flaw occurs in the COPY_AREA macro while handling MMIO write operations through the sm501_2d_engine_write() callback. A local attacker could abuse this flaw to crash the QEMU process in sm501_2d_operation() in hw/display/sm501.c on the host resulting in a denial of service.

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kernel security and bug fix update

3.10.0-1127.18.2.OL7 - Oracle Linux certificates Ilya Okomin - Oracle Linux RHCK Module Signing Key was compiled into kernel [email protected] - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and shim-x64 setlease be called without ilock Jeff Layton...

Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

A flaw was found in the Linux kernel, where it allows userspace processes, for example, a guest VM, to directly access h/w devices via its VFIO driver modules. The VFIO modules allow users to enable or disable access to the devices' MMIO memory address spaces. If a user attempts to access the...