PT-2025-32389 · Gnu+2 · Gnu Bison+2

Xudong Cao + 1 · Published 2025-01-01 · Updated 2025-10-28 · CVE-2025-8734

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions GNU Bison versions through 3.8.2

Description A problematic issue exists in GNU Bison due to a double free in the code free() function located in the src/scan-code.c file. This issue requires local access for exploitation. The exploit details have been publicly disclosed.

Recommendations Update to a version beyond 3.8.2. As a temporary workaround, consider restricting access to the code free() function until a patch is available.

Exploit

Fix

Double Free

Buffer Overflow

Weakness Enumeration

CWE-415

CWE-119

Related Identifiers

BDU:2025-10837

CVE-2025-8734

Affected Products

Debian

Gnu Bison

Red Os

References · 24

• 🔥 https://drive.google.com/file/d/123Qe44FaC-GP88dWNl9-6H4jLWUcXYNZ/view?usp=drive_link · Exploit
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-8734 · Security Note
• https://security-tracker.debian.org/tracker/source-package/bison · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-8734 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-8734 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-8734 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-8734 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-8734 · Security Note
• https://bdu.fstec.ru/vul/2025-10837 · Security Note
• https://osv.dev/vulnerability/CVE-2025-8734 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8734 · Vendor Advisory
• https://github.com/akimd/bison/issues/115 · Note
• https://vuldb.com/?id.319230 · Note
• https://t.me/CVEtracker/29529 · Telegram Post
• https://t.me/cveNotify/132753 · Telegram Post