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- From ef186fe54aa6d281a3ff8a9528417e5cc614c797 Mon Sep 17 00:00:00 2001
- From: Alan Modra <amodra@gmail.com>
- Date: Sat, 13 Aug 2022 15:32:47 +0930
- Subject: [PATCH] PR29482 - strip: heap-buffer-overflow
- PR 29482
- * coffcode.h (coff_set_section_contents): Sanity check _LIB.
- Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ef186fe54aa6d281a3ff8a9528417e5cc614c797]
- Signed-off-by: Pgowda <pgowda.cve@gmail.com>
- ---
- bfd/coffcode.h | 7 +++++--
- 1 file changed, 5 insertions(+), 2 deletions(-)
- diff --git a/bfd/coffcode.h b/bfd/coffcode.h
- index 67aaf158ca1..52027981c3f 100644
- --- a/bfd/coffcode.h
- +++ b/bfd/coffcode.h
- @@ -4302,10 +4302,13 @@ coff_set_section_contents (bfd * abfd,
-
- rec = (bfd_byte *) location;
- recend = rec + count;
- - while (rec < recend)
- + while (recend - rec >= 4)
- {
- + size_t len = bfd_get_32 (abfd, rec);
- + if (len == 0 || len > (size_t) (recend - rec) / 4)
- + break;
- + rec += len * 4;
- ++section->lma;
- - rec += bfd_get_32 (abfd, rec) * 4;
- }
-
- BFD_ASSERT (rec == recend);
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