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Ubuntu: (Multiple Advisories) (CVE-2021-3732): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3732): Linux kernel vulnerabilities

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
09/16/2021
Created
10/02/2021
Added
09/30/2021
Modified
04/17/2023

Description

A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1028-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1081-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1096-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1100-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1109-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1112-aws
  • ubuntu-upgrade-linux-image-4-15-0-1113-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1124-azure
  • ubuntu-upgrade-linux-image-4-15-0-159-generic
  • ubuntu-upgrade-linux-image-4-15-0-159-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-159-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1117-aws
  • ubuntu-upgrade-linux-image-4-4-0-1118-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1155-aws
  • ubuntu-upgrade-linux-image-4-4-0-239-generic
  • ubuntu-upgrade-linux-image-4-4-0-239-lowlatency
  • ubuntu-upgrade-linux-image-5-10-0-1050-oem
  • ubuntu-upgrade-linux-image-5-11-0-1018-kvm
  • ubuntu-upgrade-linux-image-5-11-0-1020-aws
  • ubuntu-upgrade-linux-image-5-11-0-1020-azure
  • ubuntu-upgrade-linux-image-5-11-0-1020-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1021-gcp
  • ubuntu-upgrade-linux-image-5-11-0-1021-raspi
  • ubuntu-upgrade-linux-image-5-11-0-1021-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-11-0-38-generic
  • ubuntu-upgrade-linux-image-5-11-0-38-generic-64k
  • ubuntu-upgrade-linux-image-5-11-0-38-generic-lpae
  • ubuntu-upgrade-linux-image-5-11-0-38-lowlatency
  • ubuntu-upgrade-linux-image-5-13-0-1014-oem
  • ubuntu-upgrade-linux-image-5-4-0-1006-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1020-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1025-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1045-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1048-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1054-gke
  • ubuntu-upgrade-linux-image-5-4-0-1055-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1056-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1056-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1058-aws
  • ubuntu-upgrade-linux-image-5-4-0-1062-azure
  • ubuntu-upgrade-linux-image-5-4-0-89-generic
  • ubuntu-upgrade-linux-image-5-4-0-89-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-89-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-edge
  • 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-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-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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