/usr/src/binutils/patches/ is in binutils-source 2.30-15ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/src/binutils/patches/001_ld_makefile_patch.patch
/usr/src/binutils/patches/002_gprof_profile_arcs.patch
/usr/src/binutils/patches/003_gprof_see_also_monitor.patch
/usr/src/binutils/patches/006_better_file_error.patch
/usr/src/binutils/patches/012_check_ldrunpath_length.patch
/usr/src/binutils/patches/013_bash_in_ld_testsuite.patch
/usr/src/binutils/patches/014_hash_style-both.patch
/usr/src/binutils/patches/014_hash_style-gnu.patch
/usr/src/binutils/patches/127_x86_64_i386_biarch.patch
/usr/src/binutils/patches/128_build_id.patch
/usr/src/binutils/patches/128_ppc64_powerpc_biarch.patch
/usr/src/binutils/patches/129_multiarch_libpath.patch
/usr/src/binutils/patches/130_gold_disable_testsuite_build.patch
/usr/src/binutils/patches/131_ld_bootstrap_testsuite.patch
/usr/src/binutils/patches/135_bfd_version.patch
/usr/src/binutils/patches/136_bfd_pic.patch
/usr/src/binutils/patches/157_ar_scripts_with_tilde.patch
/usr/src/binutils/patches/158_ld_system_root.patch
/usr/src/binutils/patches/161_gold_dummy_zoption.diff
/usr/src/binutils/patches/164_ld_doc_remove_xref.diff
/usr/src/binutils/patches/aarch64-libpath.diff
/usr/src/binutils/patches/binutils-no-development.diff
/usr/src/binutils/patches/branch-updates.diff
/usr/src/binutils/patches/branch-version.diff
/usr/src/binutils/patches/gold-mips.diff
/usr/src/binutils/patches/gold-no-keep-files-mapped.diff
/usr/src/binutils/patches/gprof-build.diff
/usr/src/binutils/patches/i18n-fr.diff
/usr/src/binutils/patches/infinity-notes.diff
/usr/src/binutils/patches/mips64-default-n64.diff
/usr/src/binutils/patches/pr-ld-16428.diff
/usr/src/binutils/patches/pr22734.diff
/usr/src/binutils/patches/pr22741.diff
/usr/src/binutils/patches/pr22746.diff
/usr/src/binutils/patches/pr22769.diff
/usr/src/binutils/patches/pr22770-v3.patch
/usr/src/binutils/patches/pr22794.diff
/usr/src/binutils/patches/pr22881.diff
/usr/src/binutils/patches/pr22887.diff
/usr/src/binutils/patches/pr22894.diff
/usr/src/binutils/patches/pr22895.diff
/usr/src/binutils/patches/pr22905.diff
/usr/src/binutils/patches/series
/usr/src/binutils/patches/strings-whitespace-arg.diff