CVE-2020-29569: Use After Free
First published: Tue Dec 15 2020(Updated: )
An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen Xen | <=4.14.1 | |
| Linux Linux kernel | >=4.1.44<4.2 | |
| Linux Linux kernel | >=4.4.80<4.4.254 | |
| Linux Linux kernel | >=4.9.36<4.9.249 | |
| Linux Linux kernel | >=4.11.9<4.12 | |
| Linux Linux kernel | >=4.12<4.14.213 | |
| Linux Linux kernel | >=4.15<4.19.164 | |
| Linux Linux kernel | >=4.20<5.4.86 | |
| Linux Linux kernel | >=5.5<5.10.4 | |
| All of | ||
| Netapp Hci Compute Node Bios | ||
| Netapp Hci Compute Node | ||
| Netapp Solidfire \& Hci Management Node | ||
| Netapp Solidfire \& Hci Storage Node | ||
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Netapp Hci Compute Node Bios | ||
| Netapp Hci Compute Node | ||
| ubuntu/linux | <4.15.0-136.140 | 4.15.0-136.140 |
| ubuntu/linux | <5.4.0-66.74 | 5.4.0-66.74 |
| ubuntu/linux | <5.8.0-44.50 | 5.8.0-44.50 |
| ubuntu/linux | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux | <4.4.0-204.236 | 4.4.0-204.236 |
| ubuntu/linux-aws | <4.15.0-1094.101 | 4.15.0-1094.101 |
| ubuntu/linux-aws | <5.4.0-1038.40 | 5.4.0-1038.40 |
| ubuntu/linux-aws | <5.8.0-1024.26 | 5.8.0-1024.26 |
| ubuntu/linux-aws | <4.4.0-1087.91 | 4.4.0-1087.91 |
| ubuntu/linux-aws | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws | <4.4.0-1123.137 | 4.4.0-1123.137 |
| ubuntu/linux-aws-5.0 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.4 | <5.4.0-1038.40~18.04.1 | 5.4.0-1038.40~18.04.1 |
| ubuntu/linux-aws-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-5.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-fips | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-hwe | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-aws-hwe | <4.15.0-1094.101~16.04.1 | 4.15.0-1094.101~16.04.1 |
| ubuntu/linux-azure | <5.4.0-1040.42 | 5.4.0-1040.42 |
| ubuntu/linux-azure | <5.8.0-1023.25 | 5.8.0-1023.25 |
| ubuntu/linux-azure | <4.15.0-1108.120~14.04.1 | 4.15.0-1108.120~14.04.1 |
| ubuntu/linux-azure | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure | <4.15.0-1108.120~16.04.1 | 4.15.0-1108.120~16.04.1 |
| ubuntu/linux-azure-4.15 | <4.15.0-1108.120 | 4.15.0-1108.120 |
| ubuntu/linux-azure-4.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-5.4 | <5.4.0-1040.42~18.04.1 | 5.4.0-1040.42~18.04.1 |
| ubuntu/linux-azure-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-edge | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-fde | <5.4.0-1040.42 | 5.4.0-1040.42 |
| ubuntu/linux-azure-fde | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-fde-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-azure-fips | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-bluefield | <5.4.0-1011.14 | 5.4.0-1011.14 |
| ubuntu/linux-bluefield | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-dell300x | <4.15.0-1012.16 | 4.15.0-1012.16 |
| ubuntu/linux-dell300x | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-fips | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp | <5.4.0-1037.40 | 5.4.0-1037.40 |
| ubuntu/linux-gcp | <5.8.0-1023.24 | 5.8.0-1023.24 |
| ubuntu/linux-gcp | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp | <4.15.0-1093.106~16.04.1 | 4.15.0-1093.106~16.04.1 |
| ubuntu/linux-gcp-4.15 | <4.15.0-1093.106 | 4.15.0-1093.106 |
| ubuntu/linux-gcp-4.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-5.4 | <5.4.0-1037.40~18.04.1 | 5.4.0-1037.40~18.04.1 |
| ubuntu/linux-gcp-5.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-edge | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gcp-fips | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gke | <5.4.0-1036.38 | 5.4.0-1036.38 |
| ubuntu/linux-gke | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gke-4.15 | <4.15.0-1079.84 | 4.15.0-1079.84 |
| ubuntu/linux-gke-4.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gke-5.0 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gke-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gke-5.4 | <5.4.0-1036.38~18.04.1 | 5.4.0-1036.38~18.04.1 |
| ubuntu/linux-gke-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gkeop | <5.4.0-1010.11 | 5.4.0-1010.11 |
| ubuntu/linux-gkeop | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gkeop-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-gkeop-5.4 | <5.4.0-1010.11~18.04.1 | 5.4.0-1010.11~18.04.1 |
| ubuntu/linux-gkeop-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe | <4.15.0-136.140~16.04.1 | 4.15.0-136.140~16.04.1 |
| ubuntu/linux-hwe-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-5.4 | <5.4.0-66.74~18.04.2 | 5.4.0-66.74~18.04.2 |
| ubuntu/linux-hwe-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-5.8 | <5.8.0-44.50~20.04.1 | 5.8.0-44.50~20.04.1 |
| ubuntu/linux-hwe-5.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-hwe-edge | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-ibm | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-ibm-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-ibm-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-intel | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-intel-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-intel-iot-realtime | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-intel-iotg | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-intel-iotg-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-iot | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-kvm | <4.15.0-1085.87 | 4.15.0-1085.87 |
| ubuntu/linux-kvm | <5.4.0-1033.34 | 5.4.0-1033.34 |
| ubuntu/linux-kvm | <5.8.0-1019.21 | 5.8.0-1019.21 |
| ubuntu/linux-kvm | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-kvm | <4.4.0-1089.98 | 4.4.0-1089.98 |
| ubuntu/linux-laptop | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lowlatency | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lowlatency-hwe-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lowlatency-hwe-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lowlatency-hwe-6.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lts-trusty | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-lts-xenial | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| ubuntu/linux-lts-xenial | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-nvidia | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-nvidia-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-nvidia-6.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-nvidia-lowlatency | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-5.10 | <5.10.0-1011.12 | 5.10.0-1011.12 |
| ubuntu/linux-oem-5.10 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-5.17 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-5.6 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-6.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oem-osp1 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle | <4.15.0-1065.73 | 4.15.0-1065.73 |
| ubuntu/linux-oracle | <5.4.0-1038.41 | 5.4.0-1038.41 |
| ubuntu/linux-oracle | <5.8.0-1021.22 | 5.8.0-1021.22 |
| ubuntu/linux-oracle | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle | <4.15.0-1065.73~16.04.1 | 4.15.0-1065.73~16.04.1 |
| ubuntu/linux-oracle-5.0 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle-5.13 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-oracle-5.4 | <5.4.0-1038.41~18.04.1 | 5.4.0-1038.41~18.04.1 |
| ubuntu/linux-oracle-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-raspi | <5.4.0-1029.32 | 5.4.0-1029.32 |
| ubuntu/linux-raspi | <5.8.0-1016.19 | 5.8.0-1016.19 |
| ubuntu/linux-raspi | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-raspi-5.4 | <5.4.0-1029.32~18.04.1 | 5.4.0-1029.32~18.04.1 |
| ubuntu/linux-raspi-5.4 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-raspi-realtime | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-raspi2 | <4.15.0-1079.84 | 4.15.0-1079.84 |
| ubuntu/linux-raspi2 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-raspi2 | <4.4.0-1147.157 | 4.4.0-1147.157 |
| ubuntu/linux-raspi2-5.3 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-realtime | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv | <5.8.0-17.19 | 5.8.0-17.19 |
| ubuntu/linux-riscv | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv-5.11 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv-5.15 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv-5.8 | <5.8.0-17.19~20.04.1 | 5.8.0-17.19~20.04.1 |
| ubuntu/linux-riscv-5.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-riscv-6.8 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-snapdragon | <4.15.0-1096.105 | 4.15.0-1096.105 |
| ubuntu/linux-snapdragon | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-snapdragon | <4.4.0-1151.161 | 4.4.0-1151.161 |
| ubuntu/linux-starfive | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-starfive-6.5 | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| ubuntu/linux-xilinx-zynqmp | <5.11~<4.4.254<5.4.86 | 5.11~ 4.4.254 5.4.86 |
| debian/linux | 5.10.223-1 6.1.106-3 6.1.99-1 6.10.6-1 6.10.7-1 |
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Reference Links
- https://xenbits.xenproject.org/xsa/advisory-350.html
- https://www.debian.org/security/2021/dsa-4843
- https://security.netapp.com/advisory/ntap-20210205-0001/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://security.gentoo.org/glsa/202107-30
- https://launchpad.net/bugs/cve/CVE-2020-29569
- https://xenbits.xen.org/xsa/advisory-350.html
- https://security-tracker.debian.org/tracker/CVE-2020-29569
- https://ubuntu.com/security/notices/USN-4749-1
- https://ubuntu.com/security/notices/USN-4750-1
- https://ubuntu.com/security/notices/USN-4751-1
- https://ubuntu.com/security/notices/USN-4876-1
- https://www.cve.org/CVERecord?id=CVE-2020-29569
- https://nvd.nist.gov/vuln/detail/CVE-2020-29569
- https://git.kernel.org/linus/a24fa22ce22ae302b3bf8f7008896d52d5d57b8d
- https://git.kernel.org/linus/1c728719a4da6e654afb9cc047164755072ed7c9
- https://ubuntu.com/security/CVE-2020-29569
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/severity
- agent/remedy
- agent/weakness
- agent/description
- agent/references
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- vendor/xen
- canonical/xen xen
- version/xen xen/4.14.1
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.1.44
- version/linux linux kernel/4.4.80
- version/linux linux kernel/4.9.36
- version/linux linux kernel/4.11.9
- version/linux linux kernel/4.12
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.5
- vendor/netapp
- canonical/netapp hci compute node bios
- canonical/netapp hci compute node
- canonical/netapp solidfire \& hci management node
- canonical/netapp solidfire \& hci storage node
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- package-manager/debian
- package-manager/ubuntu