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27 lines
1005 B
27 lines
1005 B
From 9b7a19f957af53304655ed1efe32253a1b11a8d0 Mon Sep 17 00:00:00 2001
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From: Kevin Backhouse <kevinbackhouse@github.com>
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Date: Fri, 9 Apr 2021 13:37:48 +0100
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Subject: [PATCH] Fix integer overflow.
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---
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src/crwimage.cpp | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/src/crwimage.cpp b/src/crwimage.cpp
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index ca79aa7..cd6200c 100644
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--- a/src/crwimage.cpp
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+++ b/src/crwimage.cpp
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@@ -1326,7 +1326,11 @@ namespace Exiv2 {
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pCrwMapping->crwDir_);
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if (edX != edEnd || edY != edEnd || edO != edEnd) {
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uint32_t size = 28;
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- if (cc && cc->size() > size) size = cc->size();
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+ if (cc) {
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+ if (cc->size() < size)
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+ throw Error(kerCorruptedMetadata);
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+ size = cc->size();
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+ }
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DataBuf buf(size);
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std::memset(buf.pData_, 0x0, buf.size_);
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if (cc) std::memcpy(buf.pData_ + 8, cc->pData() + 8, cc->size() - 8);
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