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

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Ubuntu: (Multiple Advisories) (CVE-2021-33656): Linux kernel (AWS) 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
03/22/2023

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

References

  • https://attackerkb.com/topics/cve-2021-33656
  • CVE - 2021-33656
  • CVE-2021-33656
  • USN-5469-1
  • USN-5514-1
  • USN-5515-1
  • USN-5539-1
  • USN-5541-1
  • USN-5560-1
  • USN-5560-2
  • USN-5577-1
  • USN-5580-1
  • USN-5589-1
  • USN-5590-1
  • USN-5591-1
  • USN-5591-2
  • USN-5591-3
  • USN-5591-4
  • USN-5592-1
  • USN-5594-1
  • USN-5595-1
  • USN-5596-1
  • USN-5597-1
  • USN-5598-1
  • USN-5599-1
  • USN-5600-1
  • USN-5602-1
  • USN-5603-1
  • USN-5605-1
  • USN-5616-1
  • USN-5621-1
  • USN-5622-1
  • USN-5623-1
  • USN-5624-1
  • USN-5630-1
  • USN-5633-1
  • USN-5634-1
  • USN-5635-1
  • USN-5639-1
  • USN-5640-1
  • USN-5644-1
  • USN-5647-1
  • USN-5648-1
  • USN-5650-1
  • USN-5652-1
  • USN-5654-1
  • USN-5655-1
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