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How to fix error ‘Could not access KVM kernel module’ in Proxmox, Virtualizor, SolusVM, Redhat, CentOS and Ubuntu

How to fix error ‘Could not access KVM kernel module’ in Proxmox, Virtualizor, SolusVM, Redhat, CentOS and Ubuntu

KVM is a Linux virtualization technology that’s used in many virtualization solutions such as Proxmox, Virtualizor and SolusVM. All major Linux systems like RedHat, CentOS, Debian and Ubuntu have in-built support for KVM.

Bobcares helps VPS providers and server owners setup and maintain virtualization systems through our Server Management services. A common error found during the initial setup of KVM is “Could not access KVM kernel module“. (more…)

DoS vulnerability in BIND DNS servers

DoS vulnerability in BIND DNS servers

On 28th July Internet Systems Consortium announced a critical vulnerability (CVE-2015-5477) in all BIND DNS server versions from 9.1.0 to 9.9.7-P1 and 9.10.2-P2. It allows a remote attacker to exploit an error in handling TKEY queries to launch a Denial of Service (DoS) attack which will cause the BIND DNS server to crash. (more…)

How to fix libuser root privilege and DoS attack vulnerability

How to fix libuser root privilege and DoS attack vulnerability

Qualys reported on 23rd July an important root privilege escalation vulnerability (CVE-2015-3246), and DoS attack vulnerability (CVE-2015-3245) for Linux servers using RedHat’s libuser package. Here’s how you can protect your CentOS and RedHat server from these vulnerabilities. (more…)