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45 lines
1.5 KiB
Diff
45 lines
1.5 KiB
Diff
From: Antonios Vamporakis <ant@area128.com>
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Date: Tue, 31 Dec 2013 01:05:42 +0100
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Subject: [PATCH] lzma: fix buffer bound check error
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Variable uncompressedSize references the space available, while outSizeFull is
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the actual expected uncompressed size. Using the wrong value causes LzmaDecode
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to return SZ_ERROR_INPUT_EOF. Problem was introduced in commit afca294. While
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at it add additional debug message.
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Signed-off-by: Antonios Vamporakis <ant@area128.com>
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CC: Kees Cook <keescook@chromium.org>
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CC: Simon Glass <sjg@chromium.org>
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CC: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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CC: Luka Perkov <luka@openwrt.org>
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---
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lib/lzma/LzmaTools.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/lib/lzma/LzmaTools.c b/lib/lzma/LzmaTools.c
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index 0aec2f9..90d31cd 100644
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--- a/lib/lzma/LzmaTools.c
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+++ b/lib/lzma/LzmaTools.c
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@@ -102,7 +102,7 @@ int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
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return SZ_ERROR_OUTPUT_EOF;
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/* Decompress */
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- outProcessed = *uncompressedSize;
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+ outProcessed = outSizeFull;
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WATCHDOG_RESET();
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@@ -111,6 +111,9 @@ int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
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inStream + LZMA_DATA_OFFSET, &compressedSize,
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inStream, LZMA_PROPS_SIZE, LZMA_FINISH_END, &state, &g_Alloc);
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*uncompressedSize = outProcessed;
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+
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+ debug("LZMA: Uncompresed ................ 0x%zx\n", outProcessed);
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+
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if (res != SZ_OK) {
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return res;
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}
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--
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1.8.3.2
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