Debian 11 — re2c — multiple vulnerabilities (4 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2018-21232 CVE-2020-11958 CVE-2022-23901 CVE-2026-2903 Upstream summary: re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags. Table of contents Symptom & Impact Environment & Reproduction Root […]