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Ubuntu: (Multiple Advisories) (CVE-2021-4002): Linux kernel (OEM) vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2021-4002): Linux kernel (OEM) vulnerability

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:N)
Published
01/06/2022
Created
01/08/2022
Added
01/06/2022
Modified
03/22/2023

Description

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

Solution(s)

  • ubuntu-upgrade-linux-image-3-13-0-189-generic
  • ubuntu-upgrade-linux-image-3-13-0-189-generic-lpae
  • ubuntu-upgrade-linux-image-3-13-0-189-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-1033-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1085-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1101-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1105-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1114-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1118-aws
  • ubuntu-upgrade-linux-image-4-15-0-1118-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1129-azure
  • ubuntu-upgrade-linux-image-4-15-0-166-generic
  • ubuntu-upgrade-linux-image-4-15-0-166-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-166-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1098-aws
  • ubuntu-upgrade-linux-image-4-4-0-1099-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1134-aws
  • ubuntu-upgrade-linux-image-4-4-0-218-generic
  • ubuntu-upgrade-linux-image-4-4-0-218-lowlatency
  • ubuntu-upgrade-linux-image-5-10-0-1053-oem
  • ubuntu-upgrade-linux-image-5-11-0-1021-kvm
  • ubuntu-upgrade-linux-image-5-11-0-1023-aws
  • ubuntu-upgrade-linux-image-5-11-0-1023-azure
  • ubuntu-upgrade-linux-image-5-11-0-1023-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1024-gcp
  • ubuntu-upgrade-linux-image-5-11-0-1024-raspi
  • ubuntu-upgrade-linux-image-5-11-0-1024-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-11-0-44-generic
  • ubuntu-upgrade-linux-image-5-11-0-44-generic-64k
  • ubuntu-upgrade-linux-image-5-11-0-44-generic-lpae
  • ubuntu-upgrade-linux-image-5-11-0-44-lowlatency
  • ubuntu-upgrade-linux-image-5-13-0-1007-kvm
  • ubuntu-upgrade-linux-image-5-13-0-1008-aws
  • ubuntu-upgrade-linux-image-5-13-0-1008-gcp
  • ubuntu-upgrade-linux-image-5-13-0-1009-azure
  • ubuntu-upgrade-linux-image-5-13-0-1011-oracle
  • ubuntu-upgrade-linux-image-5-13-0-1012-raspi
  • ubuntu-upgrade-linux-image-5-13-0-1012-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-13-0-1026-oem
  • ubuntu-upgrade-linux-image-5-13-0-23-generic
  • ubuntu-upgrade-linux-image-5-13-0-23-generic-64k
  • ubuntu-upgrade-linux-image-5-13-0-23-generic-lpae
  • ubuntu-upgrade-linux-image-5-13-0-23-lowlatency
  • ubuntu-upgrade-linux-image-5-14-0-1013-oem
  • 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-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-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-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-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • 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-hwe-20-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-20-04c
  • ubuntu-upgrade-linux-image-oem-20-04d
  • 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-raspi-nolpae
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-server
  • 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
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

References

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