Rapid7 Vulnerability & Exploit Database

Oracle Linux: CVE-2020-12657: ELSA-2020-2427: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Oracle Linux: CVE-2020-12657: ELSA-2020-2427: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Published
05/05/2020
Created
07/24/2020
Added
07/22/2020
Modified
01/07/2025

Description

An issue was discovered in the Linux kernel before 5.6.5. There is a use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body. A flaw was found in the Linux kernel's implementation of the BFQ IO scheduler. This flaw allows a local user able to groom system memory to cause kernel memory corruption and possible privilege escalation by abusing a race condition in the IO scheduler.

Solution(s)

  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-uek

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

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

;