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Ubuntu: (Multiple Advisories) (CVE-2020-26541): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2020-26541): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
10/02/2020
Created
09/20/2021
Added
09/09/2021
Modified
03/22/2023

Description

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

Solution(s)

  • ubuntu-upgrade-linux-image-5-10-0-1049-oem
  • ubuntu-upgrade-linux-image-5-11-0-1015-azure
  • ubuntu-upgrade-linux-image-5-11-0-1015-kvm
  • ubuntu-upgrade-linux-image-5-11-0-1017-aws
  • ubuntu-upgrade-linux-image-5-11-0-1017-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1017-raspi
  • ubuntu-upgrade-linux-image-5-11-0-1017-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-11-0-1018-gcp
  • ubuntu-upgrade-linux-image-5-11-0-34-generic
  • ubuntu-upgrade-linux-image-5-11-0-34-generic-64k
  • ubuntu-upgrade-linux-image-5-11-0-34-generic-lpae
  • ubuntu-upgrade-linux-image-5-11-0-34-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1010-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1023-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1029-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1048-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1051-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1057-gke
  • ubuntu-upgrade-linux-image-5-4-0-1059-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1059-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1060-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1065-azure
  • ubuntu-upgrade-linux-image-5-4-0-92-generic
  • ubuntu-upgrade-linux-image-5-4-0-92-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-92-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-94-generic
  • ubuntu-upgrade-linux-image-5-4-0-94-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-94-lowlatency
  • ubuntu-upgrade-linux-image-5-8-0-1043-azure
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-lts-20-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-lts-20-04
  • ubuntu-upgrade-linux-image-bluefield
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-20-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • 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-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • 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-raspi-nolpae
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

References

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