Description
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
References (4)
Scores
CVSS v3
6.5
EPSS
0.0014
EPSS Percentile
33.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Details
CWE
CWE-131
Status
published
Products (4)
linux/linux_kernel
5.9.0 - 5.11.3
netapp/cloud_backup
netapp/solidfire_baseboard_management_controller_firmware
xen/xen
Published
Mar 05, 2021
Tracked Since
Feb 18, 2026