Huawei EulerOS: Security Advisory for kvm (EulerOS-SA-2020-1792)

The remote host is missing an update for the Huawei EulerOS 'kvm' package(s) announced via the EulerOS-SA-2020-1792 advisory.

An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring-first' and 'ring-last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.(CVE-2019-14821) Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R) Processors may allow an authenticated user to potentially enable denial of service of the host system via local access.(CVE-2018-12207) TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.(CVE-2019-11135)

'kvm' package(s) on Huawei EulerOS Virtualization 3.0.6.0.

Checks if a vulnerable package version is present on the target host.

Please install the updated package(s).