27 lines
804 B
Diff
27 lines
804 B
Diff
From: =?utf-8?q?Antoine_Beaupr=C3=A9?= <anarcat@debian.org>
|
|
Date: Sun, 28 Jan 2018 21:19:50 +0100
|
|
Subject: backport of the CVE-2017-17969 fix from 7zip 18.00-beta
|
|
|
|
---
|
|
CPP/7zip/Compress/ShrinkDecoder.cpp | 7 ++++++-
|
|
1 file changed, 6 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/CPP/7zip/Compress/ShrinkDecoder.cpp b/CPP/7zip/Compress/ShrinkDecoder.cpp
|
|
index 80b7e67..4acdce5 100644
|
|
--- a/CPP/7zip/Compress/ShrinkDecoder.cpp
|
|
+++ b/CPP/7zip/Compress/ShrinkDecoder.cpp
|
|
@@ -121,7 +121,12 @@ HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream *
|
|
{
|
|
_stack[i++] = _suffixes[cur];
|
|
cur = _parents[cur];
|
|
- }
|
|
+ if (i >= kNumItems)
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ if (i >= kNumItems)
|
|
+ break;
|
|
|
|
_stack[i++] = (Byte)cur;
|
|
lastChar2 = (Byte)cur;
|