CLSA-2025-1766501126 elfutils: Fix of 3 CVEs

CVE-2025-1371: fix null pointer dereference in eu-readelf when processing corrupt ELF files with broken program headers - CVE-2025-1376: fix denial of service in libelf when processing sections without data elfstrptr on sections with shsize set but no data - CVE-2025-1377: fix denial of service...