popt vulnerabilities (Ubuntu)

3 vulnerabilities.

• popt Ubuntu Popt-devel: popt-static: short realloc in poptconfigfiletostring CVE-2026-18743 Fix available 2.5 LowAugust 20, 2026
• popt Ubuntu Popt-devel: popt-static: size_t underflow in singleoptionhelp CVE-2026-18839 Fix available 2.2 LowAugust 5, 2026
• popt Ubuntu Popt-devel: popt-static: off-by-one in poptstuffargs CVE-2026-18739 Fix available 2.5 LowAugust 4, 2026