# CVE-2020-35498: openvswitch-common: A vulnerability was found in openvswitch

CVE-2020-35498 is fixed in 15 products on 1 platform, first by openvswitch-common 2.9.8-0ubuntu0.18.04.2, released February 9, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-35498
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0803
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 9, 2021

## Description

A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | openvswitch-common Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-common 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-common-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-common Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-common 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-common-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-pki Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-pki 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-pki-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-pki Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-pki 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-pki-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-source Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-source 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-source-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-switch Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-switch 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-switch-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-switch Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-switch 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-switch-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-switch-dpdk Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-switch-dpdk 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-switch-dpdk-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-switch-dpdk Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-switch-dpdk 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-switch-dpdk-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-test Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-test 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-test-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-test Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-test 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-test-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-testcontroller Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-testcontroller 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-testcontroller-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-testcontroller Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-testcontroller 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-testcontroller-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | openvswitch-vtep Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [openvswitch-vtep 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvswitch-vtep-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | openvswitch-vtep Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [openvswitch-vtep 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvswitch-vtep-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |
| Linux | ovn-central Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [ovn-central 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovn-central-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | ovn-common Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [ovn-common 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovn-common-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | ovn-controller-vtep Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [ovn-controller-vtep 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovn-controller-vtep-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | ovn-docker Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [ovn-docker 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovn-docker-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | ovn-host Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [ovn-host 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ovn-host-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | python-openvswitch Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [python-openvswitch 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-openvswitch-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | python3-openvswitch Ubuntu 18.04.6 LTS (bionic) | 2.9.8-0ubuntu0.18.04.2 | [python3-openvswitch 2.9.8-0ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-openvswitch-2.9.8-0ubuntu0.18.04.2.md) | Feb 9, 2021 |
| Linux | python3-openvswitch Ubuntu 20.04 LTS (focal) | 2.13.1-0ubuntu0.20.04.4 | [python3-openvswitch 2.13.1-0ubuntu0.20.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-openvswitch-2.13.1-0ubuntu0.20.04.4.md) | Feb 9, 2021 |

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