Ubuntu Security Notice USN-6020-1

Ubuntu Security Notice 6020-1 - It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS …

denial of service host information ipc isolation kernel large linux linux kernel local memory notice prediction security security notice sensitive information service system ubuntu usn vms vmx