Name: CVE-2021-28039: Incorrect Calculation of Buffer Size
Creator: Rapid7
Published: 2021-03-05T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-28039, CWE-131, CVSS 6.5, EPSS 0.00424

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.

CVSS Details

CVSS 3.1 Base Score: 6.5
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade linux	Jul 30, 2024	Mar 5, 2021
Vmware Photon_os	—	Use 'tdnf update' to upgrade all packages to the latest version.	Jan 20, 2025	Mar 5, 2021

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CVSS Details

Covered by Rapid7

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