Amazon Linux 2023 — byacc — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read • Source: Amazon Linux advisory ALAS2023-2023-204 Related CVEs: CVE-2021-33641 CVE-2021-33642 Upstream summary: When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free). […]