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cdbee0 |
From 2e2244d195c4fe8b2550afa1add46c0ad2402830 Mon Sep 17 00:00:00 2001
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cdbee0 |
From: Lumir Balhar <lbalhar@redhat.com>
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cdbee0 |
Date: Wed, 4 Mar 2020 08:55:10 +0100
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cdbee0 |
Subject: [PATCH] CVE-2020-5313
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cdbee0 |
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cdbee0 |
---
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cdbee0 |
python-imaging-Pillow-d1c6db8/libImaging/FliDecode.c | 8 ++++++--
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cdbee0 |
1 file changed, 6 insertions(+), 2 deletions(-)
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cdbee0 |
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cdbee0 |
diff --git a/python-imaging-Pillow-d1c6db8/libImaging/FliDecode.c b/python-imaging-Pillow-d1c6db8/libImaging/FliDecode.c
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cdbee0 |
index 940171f..5004d39 100644
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cdbee0 |
--- a/python-imaging-Pillow-d1c6db8/libImaging/FliDecode.c
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cdbee0 |
+++ b/python-imaging-Pillow-d1c6db8/libImaging/FliDecode.c
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cdbee0 |
@@ -40,8 +40,7 @@ ImagingFliDecode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes)
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cdbee0 |
return 0;
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cdbee0 |
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cdbee0 |
/* We don't decode anything unless we have a full chunk in the
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cdbee0 |
- input buffer (on the other hand, the Python part of the driver
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cdbee0 |
- makes sure this is always the case) */
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cdbee0 |
+ input buffer */
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cdbee0 |
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cdbee0 |
ptr = buf;
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cdbee0 |
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cdbee0 |
@@ -52,6 +51,11 @@ ImagingFliDecode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes)
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cdbee0 |
/* Make sure this is a frame chunk. The Python driver takes
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cdbee0 |
case of other chunk types. */
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cdbee0 |
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cdbee0 |
+ if (bytes < 8) {
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cdbee0 |
+ state->errcode = IMAGING_CODEC_OVERRUN;
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cdbee0 |
+ return -1;
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cdbee0 |
+ }
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cdbee0 |
+
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cdbee0 |
if (I16(ptr+4) != 0xF1FA) {
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cdbee0 |
state->errcode = IMAGING_CODEC_UNKNOWN;
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cdbee0 |
return -1;
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cdbee0 |
--
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cdbee0 |
2.24.1
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cdbee0 |
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