An update for qemu is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2021-1012 Final 1.0 1.0 2021-02-04 Initial 2021-02-04 2021-02-04 openEuler SA Tool V1.0 2021-02-04 qemu security update An update for qemu is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1. 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 different Operating Systems without rebooting the PC or to debug system code. User mode emulation. In this mode, QEMU can launch processes compiled for one CPU on another CPU. It can be used to launch the Wine Windows API emulator (https://www.winehq.org) or to ease cross-compilation and cross-debugging. You can refer to https://www.qemu.org for more infortmation.\r\n\r\n Security Fix(es):\r\n\r\n 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.(CVE-2020-27821)\r\n\r\n An update for qemu is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1.\r\n\r\n openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium qemu https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1012 https://openeuler.org/en/security/cve/detail.html?id=CVE-2020-27821 https://nvd.nist.gov/vuln/detail/CVE-2020-27821 openEuler-20.03-LTS openEuler-20.03-LTS-SP1 qemu-debugsource-4.1.0-32.oe1.aarch64.rpm qemu-4.1.0-32.oe1.aarch64.rpm qemu-img-4.1.0-32.oe1.aarch64.rpm qemu-guest-agent-4.1.0-32.oe1.aarch64.rpm qemu-debuginfo-4.1.0-32.oe1.aarch64.rpm qemu-debugsource-4.1.0-32.oe1.aarch64.rpm qemu-4.1.0-32.oe1.aarch64.rpm qemu-img-4.1.0-32.oe1.aarch64.rpm qemu-guest-agent-4.1.0-32.oe1.aarch64.rpm qemu-debuginfo-4.1.0-32.oe1.aarch64.rpm qemu-help-4.1.0-32.oe1.noarch.rpm qemu-help-4.1.0-32.oe1.noarch.rpm qemu-4.1.0-32.oe1.src.rpm qemu-4.1.0-32.oe1.src.rpm qemu-4.1.0-32.oe1.x86_64.rpm qemu-debugsource-4.1.0-32.oe1.x86_64.rpm qemu-img-4.1.0-32.oe1.x86_64.rpm qemu-debuginfo-4.1.0-32.oe1.x86_64.rpm qemu-seabios-4.1.0-32.oe1.x86_64.rpm qemu-guest-agent-4.1.0-32.oe1.x86_64.rpm qemu-4.1.0-32.oe1.x86_64.rpm qemu-debugsource-4.1.0-32.oe1.x86_64.rpm qemu-img-4.1.0-32.oe1.x86_64.rpm qemu-debuginfo-4.1.0-32.oe1.x86_64.rpm qemu-seabios-4.1.0-32.oe1.x86_64.rpm qemu-guest-agent-4.1.0-32.oe1.x86_64.rpm 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. 2021-02-04 CVE-2020-27821 openEuler-20.03-LTS openEuler-20.03-LTS-SP1 Medium 6.0 AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H qemu security update 2021-02-04 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1012