CVE-2020-35498
A vulnerability was found in openvswitch.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 8.03% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- openvswitch/openvswitch · debian/debian linux · fedoraproject/fedora
- Source
- secalert@redhat.com
EPSS 8.0% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2021/dsa-4852Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/10/4Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2021/dsa-4852Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/10/4Mailing List, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.