CVE catalog
CVE-2020-27638
fastd: CVE-2020-27638
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.36% · Oct 25, 2026
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | fastd | sid | 23-2 | fixed |
| Debian | fastd | forky | 23-2 | fixed |
| Debian | fastd | trixie | 23-2 | fixed |
| Debian | fastd | bookworm | 22-4 | fixed |
| Ubuntu | fastd | 16.04 | 17-4 | vulnerable |
| Ubuntu | fastd | 16.04 | 17-4build1 | vulnerable |
| Ubuntu | fastd | 16.04 | 17-4ubuntu0.1 | fixed |
| Ubuntu | fastd | 18.04 | 18-2 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-2ubuntu1 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-2ubuntu2 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-3 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-3ubuntu0.18.04.1 | fixed |
| Ubuntu | fastd | 20.04 | 18-3build1 | vulnerable |
| Ubuntu | fastd | 20.04 | 18-3ubuntu0.1 | fixed |
| Ubuntu | fastd | 16.04 | 17-4 | vulnerable |
| Ubuntu | fastd | 16.04 | 17-4build1 | vulnerable |
| Ubuntu | fastd | 16.04 | 17-4ubuntu0.1 | fixed |
| Ubuntu | fastd | 18.04 | 18-2 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-2ubuntu1 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-2ubuntu2 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-3 | vulnerable |
| Ubuntu | fastd | 18.04 | 18-3ubuntu0.18.04.1 | fixed |
| Ubuntu | fastd | 20.04 | 18-3build1 | vulnerable |
| Ubuntu | fastd | 20.04 | 18-3ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | fastd | source | sid | 21-1 | not yet assigned | Not reported | [972521] |
| Debian | fastd | source | forky | 21-1 | not yet assigned | Not reported | [972521] |
| Debian | fastd | source | trixie | 21-1 | not yet assigned | Not reported | [972521] |
| Debian | fastd | source | bookworm | 21-1 | not yet assigned | Not reported | [972521] |
| Ubuntu | fastd | deb | 16.04 | 17-4ubuntu0.1 | Not reported | USN-4718-1 | Not reported |
| Ubuntu | fastd | deb | 18.04 | 18-3ubuntu0.18.04.1 | Not reported | USN-4718-1 | Not reported |
| Ubuntu | fastd | deb | 20.04 | 18-3ubuntu0.1 | Not reported | USN-4610-1 | Not reported |
| Ubuntu | fastd | deb | 16.04 | 17-4ubuntu0.1 | Not reported | UBUNTU-CVE-2020-27638 | Not reported |
| Ubuntu | fastd | deb | 18.04 | 18-3ubuntu0.18.04.1 | Not reported | UBUNTU-CVE-2020-27638 | Not reported |
| Ubuntu | fastd | deb | 20.04 | 18-3ubuntu0.1 | Not reported | UBUNTU-CVE-2020-27638 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [fastd]Fixed
Details (2)
22-4· amd64 · bookwormFixed · Fixed:
21-1dsa · fastd · debian · bookworm; dsa · fastd · debian · 12
22-4· arm64 · bookwormFixed · Fixed:
21-1dsa · fastd · debian · bookworm; dsa · fastd · debian · 12
- [fastd-doc]Fixed
Source package: [fastd]
Details (2)
22-4· all · bookwormFixed · Fixed:
21-1dsa · fastd · debian · bookworm; dsa · fastd · debian · 12
22-4· all · bookwormFixed · Fixed:
21-1dsa · fastd · debian · bookworm; dsa · fastd · debian · 12
[Debian 13 (Trixie)]
- [fastd]Fixed
Details (2)
23-2· amd64 · trixieFixed · Fixed:
21-1dsa · fastd · debian · 13
23-2· arm64 · trixieFixed · Fixed:
21-1dsa · fastd · debian · 13
- [fastd-doc]Fixed
Source package: [fastd]
Details (2)
23-2· all · trixieFixed · Fixed:
21-1dsa · fastd · debian · 13
23-2· all · trixieFixed · Fixed:
21-1dsa · fastd · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-27638]
- [https://osv.dev/vulnerability/DLA-2414-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-27638]
- [https://osv.dev/vulnerability/USN-4610-1]
- [https://osv.dev/vulnerability/USN-4718-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-27638]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]