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Ubuntu: (Multiple Advisories) (CVE-2020-27171): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2020-27171): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:P)
Published
03/20/2021
Created
03/25/2021
Added
03/24/2021
Modified
03/22/2023

Description

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1015-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1068-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1082-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1088-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1096-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1097-aws
  • ubuntu-upgrade-linux-image-4-15-0-1099-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1111-azure
  • ubuntu-upgrade-linux-image-4-15-0-140-generic
  • ubuntu-upgrade-linux-image-4-15-0-140-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-140-lowlatency
  • ubuntu-upgrade-linux-image-5-10-0-1019-oem
  • ubuntu-upgrade-linux-image-5-3-0-1038-raspi2
  • ubuntu-upgrade-linux-image-5-3-0-1041-gke
  • ubuntu-upgrade-linux-image-5-3-0-72-generic
  • ubuntu-upgrade-linux-image-5-3-0-72-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1012-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1032-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1036-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1039-gke
  • ubuntu-upgrade-linux-image-5-4-0-1040-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1041-aws
  • ubuntu-upgrade-linux-image-5-4-0-1041-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1043-azure
  • ubuntu-upgrade-linux-image-5-4-0-70-generic
  • ubuntu-upgrade-linux-image-5-4-0-70-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-70-lowlatency
  • ubuntu-upgrade-linux-image-5-6-0-1052-oem
  • ubuntu-upgrade-linux-image-5-8-0-1019-raspi
  • ubuntu-upgrade-linux-image-5-8-0-1019-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-8-0-1022-kvm
  • ubuntu-upgrade-linux-image-5-8-0-1024-oracle
  • ubuntu-upgrade-linux-image-5-8-0-1026-azure
  • ubuntu-upgrade-linux-image-5-8-0-1026-gcp
  • ubuntu-upgrade-linux-image-5-8-0-1027-aws
  • ubuntu-upgrade-linux-image-5-8-0-48-generic
  • ubuntu-upgrade-linux-image-5-8-0-48-generic-64k
  • ubuntu-upgrade-linux-image-5-8-0-48-generic-lpae
  • ubuntu-upgrade-linux-image-5-8-0-48-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-dell300x
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • 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-16-04
  • 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-16-04
  • 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-5-3
  • ubuntu-upgrade-linux-image-gke-5-4
  • ubuntu-upgrade-linux-image-gkeop
  • ubuntu-upgrade-linux-image-gkeop-5-3
  • ubuntu-upgrade-linux-image-gkeop-5-4
  • 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-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-18-04
  • 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-raspi2-hwe-18-04
  • 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-hwe-20-04

References

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