From c20c7adbeaa3af18a58ba1e20e6c33e7186356e3 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 6 Oct 2021 18:28:47 +1030
Subject: [PATCH] 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)
Reference:https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=c20c7adbeaa3af18a58ba1e20e6c33e7186356e3
Conflict:NA
---
 bfd/format.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/bfd/format.c b/bfd/format.c
index 5d08d1d642c..408c984690e 100644
--- a/bfd/format.c
+++ b/bfd/format.c
@@ -151,6 +151,7 @@ bfd_reinit (bfd *abfd, unsigned int section_id, bfd_cleanup cleanup)
   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);
 }
 
-- 
2.23.0