Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.
The product does not properly control situations in which an adversary can cause the product to consume or produce excessive resources without requiring the adversary to invest equivalent work or otherwise prove authorization, i.e., the adversary’s influence is “asymmetric.”
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 4.4 (including) | 4.4.182 (excluding) |
| Linux_kernel | Linux | 4.9 (including) | 4.9.182 (excluding) |
| Linux_kernel | Linux | 4.14 (including) | 4.14.127 (excluding) |
| Linux_kernel | Linux | 4.19 (including) | 4.19.52 (excluding) |
| Linux_kernel | Linux | 5.1 (including) | 5.1.11 (excluding) |
| Red Hat Enterprise Linux 6 | RedHat | kernel-0:2.6.32-754.15.3.el6 | * |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | RedHat | kernel-0:2.6.32-431.95.3.el6 | * |
| Red Hat Enterprise Linux 6.6 Advanced Update Support | RedHat | kernel-0:2.6.32-504.79.3.el6 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-rt-0:3.10.0-957.21.3.rt56.935.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-0:3.10.0-957.21.3.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-alt-0:4.14.0-115.8.2.el7a | * |
| Red Hat Enterprise Linux 7.2 Advanced Update Support | RedHat | kernel-0:3.10.0-327.79.2.el7 | * |
| Red Hat Enterprise Linux 7.2 Telco Extended Update Support | RedHat | kernel-0:3.10.0-327.79.2.el7 | * |
| Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions | RedHat | kernel-0:3.10.0-327.79.2.el7 | * |
| Red Hat Enterprise Linux 7.3 Advanced Update Support | RedHat | kernel-0:3.10.0-514.66.2.el7 | * |
| Red Hat Enterprise Linux 7.3 Telco Extended Update Support | RedHat | kernel-0:3.10.0-514.66.2.el7 | * |
| Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions | RedHat | kernel-0:3.10.0-514.66.2.el7 | * |
| Red Hat Enterprise Linux 7.4 Extended Update Support | RedHat | kernel-0:3.10.0-693.50.3.el7 | * |
| Red Hat Enterprise Linux 7.5 Extended Update Support | RedHat | kernel-0:3.10.0-862.34.2.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | kernel-rt-0:4.18.0-80.4.2.rt9.152.el8_0 | * |
| Red Hat Enterprise Linux 8 | RedHat | kernel-0:4.18.0-80.4.2.el8_0 | * |
| Red Hat Enterprise MRG 2 | RedHat | kernel-rt-1:3.10.0-693.50.3.rt56.644.el6rt | * |
| Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS | RedHat | redhat-release-virtualization-host-0:4.2-11.1.el7 | * |
| Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS | RedHat | redhat-virtualization-host-0:4.2-20190618.0.el7_6 | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | redhat-release-virtualization-host-0:4.3.4-1.el7ev | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | redhat-virtualization-host-0:4.3.4-20190620.3.el7_6 | * |
| Linux | Ubuntu | bionic | * |
| Linux | Ubuntu | cosmic | * |
| Linux | Ubuntu | disco | * |
| Linux | Ubuntu | esm-infra-legacy/trusty | * |
| Linux | Ubuntu | precise/esm | * |
| Linux | Ubuntu | trusty | * |
| Linux | Ubuntu | trusty/esm | * |
| Linux | Ubuntu | upstream | * |
| Linux | Ubuntu | xenial | * |
| Linux-aws | Ubuntu | bionic | * |
| Linux-aws | Ubuntu | cosmic | * |
| Linux-aws | Ubuntu | disco | * |
| Linux-aws | Ubuntu | trusty | * |
| Linux-aws | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | xenial | * |
| Linux-aws-5.15 | Ubuntu | upstream | * |
| Linux-aws-5.4 | Ubuntu | upstream | * |
| Linux-aws-6.8 | Ubuntu | upstream | * |
| Linux-aws-fips | Ubuntu | trusty | * |
| Linux-aws-fips | Ubuntu | upstream | * |
| Linux-aws-fips | Ubuntu | xenial | * |
| Linux-aws-hwe | Ubuntu | upstream | * |
| Linux-aws-hwe | Ubuntu | xenial | * |
| Linux-azure | Ubuntu | bionic | * |
| Linux-azure | Ubuntu | cosmic | * |
| Linux-azure | Ubuntu | disco | * |
| Linux-azure | Ubuntu | trusty | * |
| Linux-azure | Ubuntu | upstream | * |
| Linux-azure | Ubuntu | xenial | * |
| Linux-azure-4.15 | Ubuntu | upstream | * |
| Linux-azure-5.15 | Ubuntu | upstream | * |
| Linux-azure-5.4 | Ubuntu | upstream | * |
| Linux-azure-6.8 | Ubuntu | upstream | * |
| Linux-azure-edge | Ubuntu | bionic | * |
| Linux-azure-edge | Ubuntu | upstream | * |
| Linux-azure-fde | Ubuntu | focal | * |
| Linux-azure-fde | Ubuntu | upstream | * |
| Linux-azure-fde-5.15 | Ubuntu | upstream | * |
| Linux-azure-fips | Ubuntu | trusty | * |
| Linux-azure-fips | Ubuntu | upstream | * |
| Linux-azure-fips | Ubuntu | xenial | * |
| Linux-bluefield | Ubuntu | upstream | * |
| Linux-euclid | Ubuntu | upstream | * |
| Linux-euclid | Ubuntu | xenial | * |
| Linux-fips | Ubuntu | fips-updates/xenial | * |
| Linux-fips | Ubuntu | fips/xenial | * |
| Linux-fips | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | upstream | * |
| Linux-flo | Ubuntu | xenial | * |
| Linux-gcp | Ubuntu | bionic | * |
| Linux-gcp | Ubuntu | cosmic | * |
| Linux-gcp | Ubuntu | disco | * |
| Linux-gcp | Ubuntu | upstream | * |
| Linux-gcp | Ubuntu | xenial | * |
| Linux-gcp-4.15 | Ubuntu | upstream | * |
| Linux-gcp-5.15 | Ubuntu | upstream | * |
| Linux-gcp-5.4 | Ubuntu | upstream | * |
| Linux-gcp-6.8 | Ubuntu | upstream | * |
| Linux-gcp-edge | Ubuntu | bionic | * |
| Linux-gcp-edge | Ubuntu | upstream | * |
| Linux-gcp-fips | Ubuntu | trusty | * |
| Linux-gcp-fips | Ubuntu | upstream | * |
| Linux-gcp-fips | Ubuntu | xenial | * |
| Linux-gke | Ubuntu | focal | * |
| Linux-gke | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | xenial | * |
| Linux-gke-4.15 | Ubuntu | bionic | * |
| Linux-gke-4.15 | Ubuntu | upstream | * |
| Linux-gke-5.0 | Ubuntu | upstream | * |
| Linux-gkeop | Ubuntu | upstream | * |
| Linux-gkeop-5.15 | Ubuntu | upstream | * |
| Linux-goldfish | Ubuntu | upstream | * |
| Linux-goldfish | Ubuntu | xenial | * |
| Linux-hwe | Ubuntu | bionic | * |
| Linux-hwe | Ubuntu | upstream | * |
| Linux-hwe | Ubuntu | xenial | * |
| Linux-hwe-5.15 | Ubuntu | upstream | * |
| Linux-hwe-5.4 | Ubuntu | upstream | * |
| Linux-hwe-6.8 | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | bionic | * |
| Linux-hwe-edge | Ubuntu | esm-infra/bionic | * |
| Linux-hwe-edge | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | xenial | * |
| Linux-ibm | Ubuntu | upstream | * |
| Linux-ibm-5.15 | Ubuntu | upstream | * |
| Linux-ibm-5.4 | Ubuntu | upstream | * |
| Linux-intel | Ubuntu | upstream | * |
| Linux-intel-iot-realtime | Ubuntu | upstream | * |
| Linux-intel-iotg | Ubuntu | upstream | * |
| Linux-intel-iotg-5.15 | Ubuntu | upstream | * |
| Linux-iot | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | bionic | * |
| Linux-kvm | Ubuntu | cosmic | * |
| Linux-kvm | Ubuntu | disco | * |
| Linux-kvm | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | xenial | * |
| Linux-lowlatency | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-5.15 | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-6.8 | Ubuntu | upstream | * |
| Linux-lts-trusty | Ubuntu | precise/esm | * |
| Linux-lts-trusty | Ubuntu | upstream | * |
| Linux-lts-xenial | Ubuntu | trusty | * |
| Linux-lts-xenial | Ubuntu | upstream | * |
| Linux-mako | Ubuntu | upstream | * |
| Linux-mako | Ubuntu | xenial | * |
| Linux-nvidia | Ubuntu | upstream | * |
| Linux-nvidia-6.5 | Ubuntu | upstream | * |
| Linux-nvidia-6.8 | Ubuntu | upstream | * |
| Linux-nvidia-lowlatency | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | bionic | * |
| Linux-oem | Ubuntu | cosmic | * |
| Linux-oem | Ubuntu | disco | * |
| Linux-oem | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | xenial | * |
| Linux-oem-6.11 | Ubuntu | upstream | * |
| Linux-oem-6.8 | Ubuntu | upstream | * |
| Linux-oracle | Ubuntu | bionic | * |
| Linux-oracle | Ubuntu | cosmic | * |
| Linux-oracle | Ubuntu | disco | * |
| Linux-oracle | Ubuntu | upstream | * |
| Linux-oracle | Ubuntu | xenial | * |
| Linux-oracle-5.15 | Ubuntu | upstream | * |
| Linux-oracle-5.4 | Ubuntu | upstream | * |
| Linux-oracle-6.8 | Ubuntu | upstream | * |
| Linux-raspi | Ubuntu | upstream | * |
| Linux-raspi-5.4 | Ubuntu | upstream | * |
| Linux-raspi-realtime | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | bionic | * |
| Linux-raspi2 | Ubuntu | cosmic | * |
| Linux-raspi2 | Ubuntu | disco | * |
| Linux-raspi2 | Ubuntu | focal | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | xenial | * |
| Linux-realtime | Ubuntu | jammy | * |
| Linux-realtime | Ubuntu | upstream | * |
| Linux-riscv | Ubuntu | focal | * |
| Linux-riscv | Ubuntu | jammy | * |
| Linux-riscv | Ubuntu | upstream | * |
| Linux-riscv-5.15 | Ubuntu | upstream | * |
| Linux-riscv-6.8 | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | bionic | * |
| Linux-snapdragon | Ubuntu | disco | * |
| Linux-snapdragon | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | xenial | * |
| Linux-xilinx-zynqmp | Ubuntu | upstream | * |