SB2020111137 - Red Hat Enterprise Linux 7 update for kernel-rt

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Main Vulnerability Database SB2020111137

SB2020111137 - Red Hat Enterprise Linux 7 update for kernel-rt

Published: November 11, 2020 Updated: April 24, 2025

Security Bulletin ID SB2020111137
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2019-20811)

The vulnerability allows a local authenticated user to manipulate data.

An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.


2) Out-of-bounds write (CVE-ID: CVE-2020-14331)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the Linux kernel’s implementation of the invert video code on VGA consoles. A local user with can run a specially crafted program to call VT_RESIZE IOCTL, trigger an out-of-bounds write and execute arbitrary code on the target system with elevated privileges.


Remediation

Install update from vendor's website.

References