commit a281816c8aeb12619d34eec8959a43dfa5c6b4ec
author Alan Modra <amodra@gmail.com> Wed Oct 06 18:28:47 2021 +1030
committer Alan Modra <amodra@gmail.com> Thu Oct 07 14:59:53 2021 +1030
tree f1feb93885106f24c97137dac53734b50bd10cb4
parent 163d8077435419ae9ad7fb55503a8005067362a0

PR28422, build_id use-after-free

This fixes a bug in commit 5d9bbb73c1df.  All fields preserved from a
bfd in struct bfd_preserve need to be cleared in bfd_reinit.

	PR 28422
	* format.c (bfd_reinit): Clear build_id.

(cherry picked from commit 6d661cdc5be46e890ed9255e749806f46a88e26c)

bfd/format.c

diff --git a/bfd/format.c b/bfd/format.c
index 43bb341..54b63c2 100644
--- a/bfd/format.c
+++ b/bfd/format.c
@@ -151,6 +151,7 @@
   abfd->tdata.any = NULL;
   abfd->arch_info = &bfd_default_arch_struct;
   abfd->flags &= BFD_FLAGS_SAVED;
+  abfd->build_id = NULL;
   bfd_section_list_clear (abfd);
 }