Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2021-3501: CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Red Hat: CVE-2021-3501: CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:P)
Published
05/06/2021
Created
06/03/2021
Added
06/02/2021
Modified
03/13/2024

Description

A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;