vulnerability

Huawei EulerOS: CVE-2021-28711: kernel security update

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
Jan 5, 2022
Added
Apr 19, 2022
Modified
Nov 26, 2024

Description

Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "driver domains". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713

Solution(s)

huawei-euleros-2_0_sp9-upgrade-kernelhuawei-euleros-2_0_sp9-upgrade-kernel-toolshuawei-euleros-2_0_sp9-upgrade-kernel-tools-libshuawei-euleros-2_0_sp9-upgrade-python3-perf
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.