| Name | CVE-2025-8734 |
| Description | A vulnerability has been found in GNU Bison up to 3.8.2. This impacts the function code_free of the file src/scan-code.c. The manipulation leads to double free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. The issue could not be reproduced from a GNU Bison 3.8.2 tarball run in a Fedora 42 container. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1110611 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| bison (PTS) | bullseye | 2:3.7.5+dfsg-1 | vulnerable |
| forky, sid, bookworm, trixie | 2:3.8.2+dfsg-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| bison | source | (unstable) | (unfixed) | | | 1110611 |
Notes
[trixie] - bison <no-dsa> (Minor issue)
[bookworm] - bison <no-dsa> (Minor issue)
[bullseye] - bison <postponed> (Minor issue; can be fixed in next update)
https://github.com/akimd/bison/issues/115