CVE-2020-27673
First published: Thu Oct 22 2020(Updated: )
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=2.6.12<4.4.244 | |
| Linux Linux kernel | >=4.5.0<4.9.244 | |
| Linux Linux kernel | >=4.10.0<4.14.207 | |
| Linux Linux kernel | >=4.15.0<4.19.155 | |
| Linux Linux kernel | >=4.20.0<5.4.75 | |
| Linux Linux kernel | >=5.5.0<5.9.5 | |
| Linux Linux kernel | =5.10-rc1 | |
| Debian Debian Linux | =9.0 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| Xen Xen | <=4.14.0 | |
| ubuntu/linux-aws-5.8 | <5.10~ | 5.10~ |
| ubuntu/linux-azure-5.8 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-5.8 | <5.10~ | 5.10~ |
| ubuntu/linux-oracle-5.8 | <5.10~ | 5.10~ |
| 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 | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.11 | <5.10~ | 5.10~ |
| ubuntu/linux-riscv-5.11 | <5.10~ | 5.10~ |
| ubuntu/linux-aws-5.11 | <5.10~ | 5.10~ |
| ubuntu/linux-azure-5.11 | <5.10~ | 5.10~ |
| ubuntu/linux-oem-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-bluefield | <5.10~ | 5.10~ |
| ubuntu/linux-bluefield | <5.4.0-1011.14 | 5.4.0-1011.14 |
| ubuntu/linux-hwe | <5.10~ | 5.10~ |
| ubuntu/linux-hwe | <4.15.0-129.132~16.04.1 | 4.15.0-129.132~16.04.1 |
| ubuntu/linux-hwe-edge | <5.10~ | 5.10~ |
| ubuntu/linux-kvm | <4.15.0-1082.84 | 4.15.0-1082.84 |
| ubuntu/linux-kvm | <5.4.0-1031.32 | 5.4.0-1031.32 |
| ubuntu/linux-kvm | <4.4.0-1085.94 | 4.4.0-1085.94 |
| ubuntu/linux-kvm | <5.8.0-1019.21 | 5.8.0-1019.21 |
| ubuntu/linux-kvm | <5.10~ | 5.10~ |
| ubuntu/linux-aws | <5.8.0-1024.26 | 5.8.0-1024.26 |
| ubuntu/linux-aws | <5.10~ | 5.10~ |
| ubuntu/linux-aws | <4.15.0-1091.96 | 4.15.0-1091.96 |
| ubuntu/linux-aws | <5.4.0-1034.35 | 5.4.0-1034.35 |
| ubuntu/linux-aws | <4.4.0-1119.133 | 4.4.0-1119.133 |
| ubuntu/linux-aws | <4.4.0-1083.87 | 4.4.0-1083.87 |
| ubuntu/linux-aws-5.0 | <5.10~ | 5.10~ |
| ubuntu/linux-aws-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-aws-5.4 | <5.4.0-1034.35~18.04.1 | 5.4.0-1034.35~18.04.1 |
| ubuntu/linux-azure | <5.4.0-1035.36 | 5.4.0-1035.36 |
| ubuntu/linux-azure | <5.8.0-1023.25 | 5.8.0-1023.25 |
| ubuntu/linux-azure | <5.10~ | 5.10~ |
| ubuntu/linux-azure | <4.15.0-1103.114~16.04.1 | 4.15.0-1103.114~16.04.1 |
| ubuntu/linux-azure | <4.15.0-1103.114~14.04.1 | 4.15.0-1103.114~14.04.1 |
| ubuntu/linux-azure-4.15 | <4.15.0-1103.114 | 4.15.0-1103.114 |
| ubuntu/linux-azure-4.15 | <5.10~ | 5.10~ |
| ubuntu/linux-azure-5.4 | <5.4.0-1035.36~18.04.1 | 5.4.0-1035.36~18.04.1 |
| ubuntu/linux-azure-edge | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-5.3 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-edge | <5.10~ | 5.10~ |
| ubuntu/linux-gke-4.15 | <5.10~ | 5.10~ |
| ubuntu/linux-gke-4.15 | <4.15.0-1077.82 | 4.15.0-1077.82 |
| ubuntu/linux-gke-5.3 | <5.10~ | 5.10~ |
| ubuntu/linux-oracle-5.0 | <5.10~ | 5.10~ |
| ubuntu/linux-oem | <5.10~ | 5.10~ |
| ubuntu/linux-oem-5.6 | <5.10~ | 5.10~ |
| ubuntu/linux-oem-osp1 | <5.10~ | 5.10~ |
| ubuntu/linux-raspi | <5.10~ | 5.10~ |
| ubuntu/linux-raspi | <5.4.0-1026.29 | 5.4.0-1026.29 |
| ubuntu/linux-raspi | <5.8.0-1016.19 | 5.8.0-1016.19 |
| ubuntu/linux-raspi2 | <4.15.0-1077.82 | 4.15.0-1077.82 |
| ubuntu/linux-raspi2 | <4.4.0-1143.153 | 4.4.0-1143.153 |
| ubuntu/linux-raspi2 | <5.10~ | 5.10~ |
| ubuntu/linux-raspi-5.4 | <5.4.0-1026.29~18.04.1 | 5.4.0-1026.29~18.04.1 |
| ubuntu/linux-raspi-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-riscv | <5.8.0-17.19 | 5.8.0-17.19 |
| ubuntu/linux-riscv | <5.10~ | 5.10~ |
| ubuntu/linux | <5.8.0-44.50 | 5.8.0-44.50 |
| ubuntu/linux | <4.15.0-129.132 | 4.15.0-129.132 |
| ubuntu/linux | <5.4.0-59.65 | 5.4.0-59.65 |
| ubuntu/linux | <4.4.0-198.230 | 4.4.0-198.230 |
| ubuntu/linux | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.4 | <5.4.0-59.65~18.04.1 | 5.4.0-59.65~18.04.1 |
| ubuntu/linux-lts-trusty | <5.10~ | 5.10~ |
| ubuntu/linux-lts-xenial | <4.4.0-198.230~14.04.1 | 4.4.0-198.230~14.04.1 |
| ubuntu/linux-lts-xenial | <5.10~ | 5.10~ |
| ubuntu/linux-aws-5.3 | <5.10~ | 5.10~ |
| ubuntu/linux-aws-hwe | <5.10~ | 5.10~ |
| ubuntu/linux-aws-hwe | <4.15.0-1091.96~16.04.1 | 4.15.0-1091.96~16.04.1 |
| ubuntu/linux-azure-5.3 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-4.15 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-4.15 | <4.15.0-1091.104 | 4.15.0-1091.104 |
| ubuntu/linux-gcp-5.4 | <5.4.0-1033.35~18.04.1 | 5.4.0-1033.35~18.04.1 |
| ubuntu/linux-gke-5.0 | <5.10~ | 5.10~ |
| ubuntu/linux-oracle-5.4 | <5.4.0-1034.36~18.04.1 | 5.4.0-1034.36~18.04.1 |
| ubuntu/linux-raspi2-5.3 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp-5.11 | <5.10~ | 5.10~ |
| ubuntu/linux-intel-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-azure-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-aws-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-ibm | <5.10~ | 5.10~ |
| ubuntu/linux-fips | <5.10~ | 5.10~ |
| ubuntu/linux-azure-fde | <5.10~ | 5.10~ |
| ubuntu/linux-azure-fde | <5.4.0-1035.36 | 5.4.0-1035.36 |
| ubuntu/linux-gcp-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-ibm-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-oracle-5.13 | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.8 | <5.10~ | 5.10~ |
| ubuntu/linux-hwe-5.8 | <5.8.0-44.50~20.04.1 | 5.8.0-44.50~20.04.1 |
| ubuntu/linux-gke-5.4 | <5.4.0-1033.35~18.04.1 | 5.4.0-1033.35~18.04.1 |
| ubuntu/linux-gke-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-gkeop-5.4 | <5.4.0-1008.9~18.04.1 | 5.4.0-1008.9~18.04.1 |
| ubuntu/linux-gkeop-5.4 | <5.10~ | 5.10~ |
| ubuntu/linux-gcp | <5.10~ | 5.10~ |
| ubuntu/linux-gcp | <5.8.0-1023.24 | 5.8.0-1023.24 |
| ubuntu/linux-gcp | <4.15.0-1091.104~16.04.1 | 4.15.0-1091.104~16.04.1 |
| ubuntu/linux-gcp | <5.4.0-1033.35 | 5.4.0-1033.35 |
| ubuntu/linux-oracle | <4.15.0-1062.68 | 4.15.0-1062.68 |
| ubuntu/linux-oracle | <5.4.0-1034.36 | 5.4.0-1034.36 |
| ubuntu/linux-oracle | <4.15.0-1062.68~16.04.1 | 4.15.0-1062.68~16.04.1 |
| ubuntu/linux-oracle | <5.8.0-1021.22 | 5.8.0-1021.22 |
| ubuntu/linux-oracle | <5.10~ | 5.10~ |
| ubuntu/linux-snapdragon | <4.15.0-1094.103 | 4.15.0-1094.103 |
| ubuntu/linux-snapdragon | <4.4.0-1147.157 | 4.4.0-1147.157 |
| ubuntu/linux-snapdragon | <5.10~ | 5.10~ |
| ubuntu/linux-dell300x | <5.10~ | 5.10~ |
| ubuntu/linux-dell300x | <4.15.0-1010.14 | 4.15.0-1010.14 |
| ubuntu/linux-gkeop | <5.10~ | 5.10~ |
| ubuntu/linux-oem-5.10 | <5.10~ | 5.10~ |
| ubuntu/linux-gke | <5.10~ | 5.10~ |
| ubuntu/linux-lowlatency | <5.10~ | 5.10~ |
| ubuntu/linux-oem-5.17 | <5.10~ | 5.10~ |
| ubuntu/linux-oracle-5.11 | <5.10~ | 5.10~ |
| debian/linux | 4.19.249-2 4.19.304-1 5.10.209-2 5.10.205-2 6.1.76-1 6.1.85-1 6.6.15-2 6.7.12-1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
- http://www.openwall.com/lists/oss-security/2021/01/19/6
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070
- https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- https://security.gentoo.org/glsa/202011-06
- https://xenbits.xen.org/xsa/advisory-332.html
- https://launchpad.net/bugs/cve/CVE-2020-27673
- https://security-tracker.debian.org/tracker/CVE-2020-27673
- https://ubuntu.com/security/notices/USN-4751-1
- https://www.cve.org/CVERecord?id=CVE-2020-27673
- https://nvd.nist.gov/vuln/detail/CVE-2020-27673
- https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
- https://git.kernel.org/linus/e99502f76271d6bc4e374fe368c50c67a1fd3070
- https://ubuntu.com/security/CVE-2020-27673
- collector/nvd-api
- collector/nvd-index
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/severity
- agent/author
- agent/remedy
- agent/description
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/event
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- collector/security-tracker-debian
- source/Debian
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/2.6.12
- version/linux linux kernel/4.5.0
- version/linux linux kernel/4.10.0
- version/linux linux kernel/4.15.0
- version/linux linux kernel/4.20.0
- version/linux linux kernel/5.5.0
- version/linux linux kernel/5.10-rc1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- vendor/opensuse
- canonical/opensuse leap
- version/opensuse leap/15.1
- version/opensuse leap/15.2
- vendor/xen
- canonical/xen xen
- version/xen xen/4.14.0
- package-manager/ubuntu
- package-manager/debian