fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.

Affected Package

OS OS Version Package Name Package Version
ubuntu upstream linux-hwe 5.14~rc1
ubuntu 16.04 linux-hwe 4.15.0-162.170~16.04.1
ubuntu upstream linux-hwe-5.4 5.14~rc1
ubuntu 18.04 linux-hwe-5.4 5.4.0-87.98~18.04.1
ubuntu upstream linux-hwe-5.8 5.14~rc1
ubuntu 20.04 linux-hwe-5.8 was pending [5.8.0-67.75] now end-of-life
ubuntu upstream linux-hwe-edge 5.14~rc1
ubuntu upstream linux-lts-xenial 5.14~rc1
ubuntu 20.04 linux-aws 5.4.0-1057.60
ubuntu upstream linux-aws 5.14~rc1
ubuntu 21.04 linux-aws 5.11.0-1019.20
ubuntu upstream linux-aws-5.0 5.14~rc1
ubuntu upstream linux-aws-5.3 5.14~rc1
ubuntu upstream linux-aws-5.4 5.14~rc1
ubuntu 18.04 linux-aws-5.4 5.4.0-1057.60~18.04.1
ubuntu 20.04 linux-aws-5.8 any
ubuntu upstream linux-aws-5.8 5.14~rc1
ubuntu upstream linux-aws-hwe 5.14~rc1
ubuntu 16.04 linux-aws-hwe 4.15.0-1115.122~16.04.1
ubuntu upstream linux-azure 5.14~rc1
ubuntu 14.04 linux-azure 4.15.0-1126.139~14.04.1
ubuntu 16.04 linux-azure 4.15.0-1126.139~16.04.1
ubuntu 21.04 linux-azure 5.11.0-1017.18
ubuntu 20.04 linux-azure 5.4.0-1059.62
ubuntu 18.04 linux-azure-4.15 4.15.0-1126.139
ubuntu upstream linux-azure-4.15 5.14~rc1
ubuntu upstream linux-azure-5.3 5.14~rc1
ubuntu upstream linux-azure-5.4 5.14~rc1
ubuntu 18.04 linux-azure-5.4 5.4.0-1059.62~18.04.1
ubuntu upstream linux-azure-5.8 5.14~rc1
ubuntu 20.04 linux-azure-5.8 5.8.0-1043.46~20.04.1
ubuntu upstream linux-bluefield 5.14~rc1
ubuntu 20.04 linux-bluefield 5.4.0-1019.22
ubuntu upstream linux-dell300x 5.14~rc1
ubuntu 18.04 linux-dell300x 4.15.0-1030.35
ubuntu upstream linux-azure-edge 5.14~rc1
ubuntu upstream linux-gcp 5.14~rc1
ubuntu 16.04 linux-gcp 4.15.0-1111.125~16.04.1
ubuntu 20.04 linux-gcp 5.4.0-1053.57
ubuntu 21.04 linux-gcp 5.11.0-1020.22
ubuntu 18.04 linux-gcp-4.15 4.15.0-1111.125
ubuntu upstream linux-gcp-4.15 5.14~rc1
ubuntu upstream linux-gcp-5.3 5.14~rc1
ubuntu upstream linux-gcp-5.4 5.14~rc1
ubuntu 18.04 linux-gcp-5.4 5.4.0-1053.57~18.04.1
ubuntu 20.04 linux-gcp-5.8 any
ubuntu upstream linux-gcp-5.8 5.14~rc1
ubuntu upstream linux-gcp-edge 5.14~rc1
ubuntu upstream linux-gke 5.14~rc1
ubuntu 20.04 linux-gke 5.4.0-1053.56
ubuntu upstream linux-gke-4.15 5.14~rc1
ubuntu 18.04 linux-gke-5.0 any
ubuntu upstream linux-gke-5.0 5.14~rc1
ubuntu 18.04 linux-gke-5.3 any
ubuntu upstream linux-gke-5.3 5.14~rc1
ubuntu upstream linux-gke-5.4 5.14~rc1
ubuntu 18.04 linux-gke-5.4 5.4.0-1053.56~18.04.1
ubuntu upstream linux-gkeop 5.14~rc1
ubuntu 20.04 linux-gkeop 5.4.0-1024.25
ubuntu 22.04 linux-gkeop any
ubuntu upstream linux-gkeop-5.4 5.14~rc1
ubuntu 18.04 linux-gkeop-5.4 5.4.0-1024.25~18.04.1
ubuntu upstream linux-oracle-5.0 5.14~rc1
ubuntu upstream linux-oracle-5.3 5.14~rc1
ubuntu upstream linux-oracle-5.4 5.14~rc1
ubuntu 18.04 linux-oracle-5.4 5.4.0-1055.59~18.04.1
ubuntu 20.04 linux-oracle-5.8 any
ubuntu upstream linux-oracle-5.8 5.14~rc1
ubuntu upstream linux-oem 5.14~rc1
ubuntu 18.04 linux-oem any
ubuntu upstream linux-oem-5.6 5.14~rc1
ubuntu 20.04 linux-oem-5.6 any
ubuntu 20.04 linux-oem-5.10 5.10.0-1049.51
ubuntu upstream linux-oem-5.10 5.14~rc1
ubuntu upstream linux-oem-osp1 5.14~rc1
ubuntu 18.04 linux-oem-osp1 any
ubuntu upstream linux-raspi 5.14~rc1
ubuntu 20.04 linux-raspi 5.4.0-1044.48
ubuntu 21.04 linux-raspi 5.11.0-1019.20
ubuntu 16.04 linux-raspi2 any
ubuntu 18.04 linux-raspi2 4.15.0-1098.104
ubuntu upstream linux-raspi2 5.14~rc1
ubuntu 18.04 linux-raspi2-5.3 any
ubuntu upstream linux-raspi2-5.3 5.14~rc1
ubuntu upstream linux-raspi-5.4 5.14~rc1
ubuntu 18.04 linux-raspi-5.4 5.4.0-1044.48~18.04.1
ubuntu 21.04 linux-riscv 5.11.0-1020.21
ubuntu 20.04 linux-riscv any
ubuntu upstream linux-riscv 5.14~rc1
ubuntu 20.04 linux-riscv-5.8 any
ubuntu upstream linux-riscv-5.8 5.14~rc1
ubuntu 16.04 linux-snapdragon any
ubuntu upstream linux-snapdragon 5.14~rc1
ubuntu 18.04 linux-snapdragon 4.15.0-1115.124
ubuntu upstream linux-hwe-5.11 5.14~rc1
ubuntu 20.04 linux-hwe-5.11 5.11.0-37.41~20.04.2
ubuntu upstream linux-riscv-5.11 5.14~rc1
ubuntu 20.04 linux-riscv-5.11 5.11.0-1020.21~20.04.1
ubuntu upstream linux 5.14~rc1
ubuntu 18.04 linux 4.15.0-162.170
ubuntu 20.04 linux 5.4.0-88.99
ubuntu 21.04 linux 5.11.0-37.41
ubuntu 20.04 linux-kvm 5.4.0-1047.49
ubuntu upstream linux-kvm 5.14~rc1
ubuntu 18.04 linux-kvm 4.15.0-1102.104
ubuntu 21.04 linux-kvm 5.11.0-1017.18
ubuntu upstream linux-oracle 5.14~rc1
ubuntu 18.04 linux-oracle 4.15.0-1083.91
ubuntu 16.04 linux-oracle 4.15.0-1083.91~16.04.1
ubuntu 20.04 linux-oracle 5.4.0-1055.59
ubuntu 21.04 linux-oracle 5.11.0-1019.20
ubuntu upstream linux-oem-5.13 5.14~rc1
ubuntu 20.04 linux-oem-5.13 5.13.0-1014.18
ubuntu 20.04 linux-aws-5.11 5.11.0-1019.20~20.04.1
ubuntu upstream linux-aws-5.11 5.14~rc1
ubuntu 20.04 linux-azure-5.11 5.11.0-1017.18~20.04.1
ubuntu upstream linux-azure-5.11 5.14~rc1
ubuntu upstream linux-oracle-5.11 5.14~rc1
ubuntu 20.04 linux-oracle-5.11 5.11.0-1019.20~20.04.1
ubuntu 20.04 linux-ibm 5.4.0-1005.6
ubuntu upstream linux-ibm 5.14~rc1
ubuntu 20.04 linux-gcp-5.11 5.11.0-1020.22~20.04.1
ubuntu upstream linux-gcp-5.11 5.14~rc1
ubuntu upstream linux-oem-5.14 5.14~rc1
ubuntu upstream linux-intel-5.13 5.14~rc1
ubuntu upstream linux-azure-5.13 5.14~rc1
ubuntu upstream linux-hwe-5.13 5.14~rc1
ubuntu upstream linux-aws-5.13 5.14~rc1
ubuntu upstream linux-fips 5.14~rc1
ubuntu upstream linux-oracle-5.13 5.14~rc1
ubuntu upstream linux-gcp-5.13 5.14~rc1
ubuntu upstream linux-ibm-5.4 5.14~rc1
ubuntu upstream linux-azure-fde 5.14~rc1
ubuntu upstream linux-lowlatency 5.14~rc1
ubuntu upstream linux-oem-5.17 5.14~rc1
ubuntu upstream linux-intel-iotg any
ubuntu upstream linux-intel-iotg-5.15 any
ubuntu upstream linux-lowlatency-hwe-5.15 any
ubuntu upstream linux-hwe-5.15 any
ubuntu upstream linux-aws-5.15 any
ubuntu upstream linux-gcp-5.15 any
ubuntu upstream linux-gke-5.15 any
ubuntu upstream linux-azure-5.15 any