forked from mirrors/nixpkgs
24 lines
807 B
Diff
24 lines
807 B
Diff
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From: Robert Luberda <robert@debian.org>
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Date: Sat, 19 Nov 2016 08:48:08 +0100
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Subject: Fix nullptr dereference (CVE-2016-9296)
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Patch taken from https://sourceforge.net/p/p7zip/bugs/185/
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---
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CPP/7zip/Archive/7z/7zIn.cpp | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/CPP/7zip/Archive/7z/7zIn.cpp b/CPP/7zip/Archive/7z/7zIn.cpp
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index b0c6b98..7c6dde2 100644
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--- a/CPP/7zip/Archive/7z/7zIn.cpp
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+++ b/CPP/7zip/Archive/7z/7zIn.cpp
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@@ -1097,7 +1097,8 @@ HRESULT CInArchive::ReadAndDecodePackedStreams(
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if (CrcCalc(data, unpackSize) != folders.FolderCRCs.Vals[i])
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ThrowIncorrect();
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}
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- HeadersSize += folders.PackPositions[folders.NumPackStreams];
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+ if (folders.PackPositions)
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+ HeadersSize += folders.PackPositions[folders.NumPackStreams];
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return S_OK;
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}
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