Ubuntu Security Notice 2496-1 – Michal Zalewski discovered that the setup_group function in libbfd in GNU binutils did not properly check group headers in ELF files. An attacker could use this to craft input that could cause a denial of service (application crash) or possibly execute arbitrary code. Hanno Boeck discovered that the _bfd_XXi_swap_aouthdr_in function in libbfd in GNU binutils allowed out-of-bounds writes. An attacker could use this to craft input that could cause a denial of service (application crash) or possibly execute arbitrary code. Various other issues were also addressed.