CVE-2020-27638

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://bugs.debian.org/972521Issue Tracking, Third Party Advisory
https://fastd.readthedocs.io/en/stable/releases/v21.htmlBroken Link, Release Notes, Third Party Advisory
https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaeaPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00025.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/
https://bugs.debian.org/972521Issue Tracking, Third Party Advisory
https://fastd.readthedocs.io/en/stable/releases/v21.htmlBroken Link, Release Notes, Third Party Advisory
https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaeaPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00025.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/

Timeline

Published: Oct 22, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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