CVE-2018-15469

Priority
Description
An issue was discovered in Xen through 4.11.x. ARM never properly
implemented grant table v2, either in the hypervisor or in Linux.
Unfortunately, an ARM guest can still request v2 grant tables; they will
simply not be properly set up, resulting in subsequent grant-related
hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG()
check in the hypervisor, resulting in a denial-of-service (crash).
Notes
mdeslaurhypervisor packages are in universe. For
issues in the hypervisor, add appropriate
tags to each section, ex:
Tags_xen: universe-binary
Package
Source: xen (LP Ubuntu Debian)
Upstream:released (4.11.1~pre.20180911.5acdd26fdc+dfsg-2)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was needs-triage)
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):needed
Ubuntu 19.04 (Disco Dingo):needed
Ubuntu 19.10 (Eoan Ermine):needed
Ubuntu 20.04 (Focal Fossa):needed
Binaries built from this source package are in universe and so are supported by the community. For more details see https://wiki.ubuntu.com/SecurityTeam/FAQ#Official_Support
More Information

Updated: 2019-12-05 19:54:00 UTC (commit 0aa5e7c87c8b55d2ec5c7f4ca1179cf75de91961)