From: H.J. Lu <hjl.tools@gmail.com>
Date: Tue, 30 Sep 2025 00:39:34 +0000 (+0800)
Subject: elf: Don't read beyond .eh_frame section end
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e4f355f13be7fd4b165fe3ec3349ece972db05db;p=thirdparty%2Fbinutils-gdb.git

elf: Don't read beyond .eh_frame section end

	PR ld/33500
	* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Don't read beyond
	the .eh_frame section end.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---

diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c
index 30bb313489c..4eda3c991bb 100644
--- a/bfd/elf-eh-frame.c
+++ b/bfd/elf-eh-frame.c
@@ -761,6 +761,7 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
 
 	  strcpy (cie->augmentation, (char *) buf);
 	  buf = (bfd_byte *) null_byte + 1;
+	  REQUIRE (buf + 1 < end);
 	  this_inf->u.cie.aug_str_len = buf - start - 1;
 	  ENSURE_NO_RELOCS (buf);
 	  if (buf[0] == 'e' && buf[1] == 'h')