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aa19c8c35e
Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ef186fe54aa6d281a3ff8a9528417e5cc614c797] (From OE-Core rev: 2cf26e2e5a83d2b2efd01de34c11da07eeb9c8f9) Signed-off-by: Florin Diaconescu <florin.diaconescu009@gmail.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
From ef186fe54aa6d281a3ff8a9528417e5cc614c797 Mon Sep 17 00:00:00 2001
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From: Alan Modra <amodra@gmail.com>
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Date: Sat, 13 Aug 2022 15:32:47 +0930
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Subject: [PATCH] PR29482 - strip: heap-buffer-overflow
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PR 29482
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* coffcode.h (coff_set_section_contents): Sanity check _LIB.
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CVE: CVE-2022-38533
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Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ef186fe54aa6d281a3ff8a9528417e5cc614c797]
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Signed-off-by: Florin Diaconescu <florin.diaconescu009@gmail.com>
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---
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bfd/coffcode.h | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/bfd/coffcode.h b/bfd/coffcode.h
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index dec2e9c6370..75c18d88602 100644
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--- a/bfd/coffcode.h
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+++ b/bfd/coffcode.h
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@@ -4170,10 +4170,13 @@ coff_set_section_contents (bfd * abfd,
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rec = (bfd_byte *) location;
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recend = rec + count;
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- while (rec < recend)
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+ while (recend - rec >= 4)
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{
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+ size_t len = bfd_get_32 (abfd, rec);
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+ if (len == 0 || len > (size_t) (recend - rec) / 4)
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+ break;
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+ rec += len * 4;
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++section->lma;
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- rec += bfd_get_32 (abfd, rec) * 4;
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}
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BFD_ASSERT (rec == recend);
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