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Ubuntu: (Multiple Advisories) (CVE-2021-3178): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3178): Linux kernel vulnerabilities

Severity
6
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:N)
Published
01/19/2021
Created
03/18/2021
Added
03/17/2021
Modified
11/08/2023

Description

fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1013-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1066-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1080-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1086-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1094-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1095-aws
  • ubuntu-upgrade-linux-image-4-15-0-1097-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1109-azure
  • ubuntu-upgrade-linux-image-4-15-0-137-generic
  • ubuntu-upgrade-linux-image-4-15-0-137-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-137-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1087-aws
  • ubuntu-upgrade-linux-image-4-4-0-1089-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1123-aws
  • ubuntu-upgrade-linux-image-4-4-0-1147-raspi2
  • ubuntu-upgrade-linux-image-4-4-0-1151-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-204-generic
  • ubuntu-upgrade-linux-image-4-4-0-204-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-204-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-204-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-204-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-204-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-204-powerpc64-smp
  • ubuntu-upgrade-linux-image-5-4-0-1011-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1030-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1034-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1037-gke
  • ubuntu-upgrade-linux-image-5-4-0-1038-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1039-aws
  • ubuntu-upgrade-linux-image-5-4-0-1039-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1041-azure
  • ubuntu-upgrade-linux-image-5-4-0-67-generic
  • ubuntu-upgrade-linux-image-5-4-0-67-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-67-lowlatency
  • ubuntu-upgrade-linux-image-5-6-0-1053-oem
  • ubuntu-upgrade-linux-image-5-8-0-1020-raspi
  • ubuntu-upgrade-linux-image-5-8-0-1020-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-8-0-1023-kvm
  • ubuntu-upgrade-linux-image-5-8-0-1025-oracle
  • ubuntu-upgrade-linux-image-5-8-0-1027-azure
  • ubuntu-upgrade-linux-image-5-8-0-1027-gcp
  • ubuntu-upgrade-linux-image-5-8-0-1028-aws
  • ubuntu-upgrade-linux-image-5-8-0-49-generic
  • ubuntu-upgrade-linux-image-5-8-0-49-generic-64k
  • ubuntu-upgrade-linux-image-5-8-0-49-generic-lpae
  • ubuntu-upgrade-linux-image-5-8-0-49-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-edge
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-edge
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-dell300x
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-edge
  • 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-generic-lpae-lts-xenial
  • 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-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-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-powerpc-e500mc
  • ubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc-smp
  • ubuntu-upgrade-linux-image-powerpc-smp-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-emb
  • ubuntu-upgrade-linux-image-powerpc64-emb-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-smp
  • ubuntu-upgrade-linux-image-powerpc64-smp-lts-xenial
  • 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

  • https://attackerkb.com/topics/cve-2021-3178
  • CVE - 2021-3178
  • CVE-2021-3178
  • USN-4576-1
  • USN-4579-1
  • USN-4657-1
  • USN-4658-1
  • USN-4659-1
  • USN-4660-1
  • USN-4680-1
  • USN-4708-1
  • USN-4709-1
  • USN-4749-1
  • USN-4750-1
  • USN-4751-1
  • USN-4876-1
  • USN-4877-1
  • USN-4878-1
  • USN-4879-1
  • USN-4884-1
  • USN-4909-1
  • USN-4910-1
  • USN-4912-1
  • USN-4916-1
  • USN-4917-1
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