CVE catalog
CVE-2020-14150
bison: CVE-2020-14150
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
GNU Bison before 3.5.4 allows attackers to cause a denial of service (application crash). NOTE: there is a risk only if Bison is used with untrusted input, and an observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug reports were intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.
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 | bison | sid | 2:3.8.2+dfsg-1 | fixed |
| Debian | bison | forky | 2:3.8.2+dfsg-1 | fixed |
| Debian | bison | trixie | 2:3.8.2+dfsg-1 | fixed |
| Debian | bison | bookworm | 2:3.8.2+dfsg-1 | fixed |
| Ubuntu | bison | 16.04 | 2:3.0.2.dfsg-2 | vulnerable |
| Ubuntu | bison | 16.04 | 2:3.0.4.dfsg-1 | vulnerable |
| Ubuntu | bison | 18.04 | 2:3.0.4.dfsg-1build1 | vulnerable |
| Ubuntu | bison | 20.04 | 2:3.4.1+dfsg-4 | vulnerable |
| Ubuntu | bison | 20.04 | 2:3.4.2+dfsg-1 | vulnerable |
| Ubuntu | bison | 20.04 | 2:3.5.1+dfsg-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bison | source | sid | 2:3.6.1+dfsg-1 | unimportant | Not reported | Not reported |
| Debian | bison | source | forky | 2:3.6.1+dfsg-1 | unimportant | Not reported | Not reported |
| Debian | bison | source | trixie | 2:3.6.1+dfsg-1 | unimportant | Not reported | Not reported |
| Debian | bison | source | bookworm | 2:3.6.1+dfsg-1 | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [bison]Fixed
Source package: [bison]
Details (2)
2:3.8.2+dfsg-1+b1· amd64 · bookwormFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · bookworm; dsa · bison · debian · 12
2:3.8.2+dfsg-1+b1· arm64 · bookwormFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · bookworm; dsa · bison · debian · 12
- [libbison-dev]Fixed
Source package: [bison]
Details (2)
2:3.8.2+dfsg-1+b1· amd64 · bookwormFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · bookworm; dsa · bison · debian · 12
2:3.8.2+dfsg-1+b1· arm64 · bookwormFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · bookworm; dsa · bison · debian · 12
[Debian 13 (Trixie)]
- [bison]Fixed
Source package: [bison]
Details (2)
2:3.8.2+dfsg-1+b2· amd64 · trixieFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · 13
2:3.8.2+dfsg-1+b2· arm64 · trixieFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · 13
- [libbison-dev]Fixed
Source package: [bison]
Details (2)
2:3.8.2+dfsg-1+b2· amd64 · trixieFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · 13
2:3.8.2+dfsg-1+b2· arm64 · trixieFixed · Fixed:
2:3.6.1+dfsg-1dsa · bison · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-14150]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-14150]
- [https://security-tracker.debian.org/tracker/CVE-2020-14150]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14150.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]