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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)
---
bfd/format.c | 1 +
1 file changed, 1 insertion(+)
--- 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);
}
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