Rapid7 Vulnerability & Exploit Database

Ubuntu: (Multiple Advisories) (CVE-2021-33656): Linux kernel vulnerabilities

Back to Search

Ubuntu: (Multiple Advisories) (CVE-2021-33656): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/18/2022
Created
08/29/2022
Added
08/25/2022
Modified
10/05/2022

Description

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1052-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1105-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1126-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1135-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1136-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1140-aws
  • ubuntu-upgrade-linux-image-4-15-0-1140-aws-hwe
  • ubuntu-upgrade-linux-image-4-15-0-1150-azure
  • ubuntu-upgrade-linux-image-4-15-0-192-generic
  • ubuntu-upgrade-linux-image-4-15-0-192-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-192-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1113-aws
  • ubuntu-upgrade-linux-image-4-4-0-1114-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1150-aws
  • ubuntu-upgrade-linux-image-4-4-0-1151-aws
  • ubuntu-upgrade-linux-image-4-4-0-234-generic
  • ubuntu-upgrade-linux-image-4-4-0-234-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1032-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1045-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1052-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1069-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1074-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1081-gke
  • ubuntu-upgrade-linux-image-5-4-0-1082-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1084-aws
  • ubuntu-upgrade-linux-image-5-4-0-1087-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1090-azure
  • ubuntu-upgrade-linux-image-5-4-0-1090-azure-fde
  • ubuntu-upgrade-linux-image-5-4-0-125-generic
  • ubuntu-upgrade-linux-image-5-4-0-125-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-125-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-aws-lts-20-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-fde
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-azure-lts-20-04
  • ubuntu-upgrade-linux-image-bluefield
  • ubuntu-upgrade-linux-image-dell300x
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • ubuntu-upgrade-linux-image-gcp-lts-20-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-5-4
  • ubuntu-upgrade-linux-image-gkeop
  • ubuntu-upgrade-linux-image-gkeop-5-4
  • ubuntu-upgrade-linux-image-ibm
  • ubuntu-upgrade-linux-image-ibm-lts-20-04
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-oracle-lts-20-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-hwe-18-04
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-16-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

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

;