From 53731cfccae624ddd6b9b594b01574627fee1e8b Mon Sep 17 00:00:00 2001
From: renmingshuai <renmingshuai@huawei.com>
Date: Thu, 28 Jan 2021 17:22:11 +0800
Subject: [PATCH] fix CVE-2020-35653

---
 backport-CVE-2020-35653.patch | 41 +++++++++++++++++++++++++++++++++++
 python-pillow.spec            |  9 +++++++-
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 backport-CVE-2020-35653.patch

diff --git a/backport-CVE-2020-35653.patch b/backport-CVE-2020-35653.patch
new file mode 100644
index 0000000..901db5e
--- /dev/null
+++ b/backport-CVE-2020-35653.patch
@@ -0,0 +1,41 @@
+From 1eff62205ebe9d42a9417955d2955591be69c9bb Mon Sep 17 00:00:00 2001
+From: Eric Soroos <eric-github@soroos.net>
+Date: Thu, 17 Dec 2020 00:17:53 +0100
+Subject: [PATCH] Fix for CVE CVE-2020-35655 - Read Overflow in PCX Decoding.
+commit 2f409261eb1228e166868f8f0b5da5cda52e55bf upstream
+* Don't trust the image to specify a buffer size
+Conflict:NA
+Reference:https://github.com/python-pillow/Pillow/commit/2f409261eb1228e166868f8f0b5da5cda52e55bf
+---
+ src/PIL/PcxImagePlugin.py | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+diff --git a/src/PIL/PcxImagePlugin.py b/src/PIL/PcxImagePlugin.py
+index daa58b3..82aa3bb 100644
+--- a/src/PIL/PcxImagePlugin.py
++++ b/src/PIL/PcxImagePlugin.py
+@@ -63,9 +63,9 @@ class PcxImageFile(ImageFile.ImageFile):
+         version = i8(s[1])
+         bits = i8(s[3])
+         planes = i8(s[65])
+-        stride = i16(s, 66)
++        ignored_stride = i16(s, 66)
+         logger.debug("PCX version %s, bits %s, planes %s, stride %s",
+-                     version, bits, planes, stride)
++                     version, bits, planes, ignored_stride)
+ 
+         self.info["dpi"] = i16(s, 12), i16(s, 14)
+ 
+@@ -102,6 +102,11 @@ class PcxImageFile(ImageFile.ImageFile):
+         self.mode = mode
+         self._size = bbox[2]-bbox[0], bbox[3]-bbox[1]
+ 
++        # don't trust the passed in stride. Calculate for ourselves.
++        # CVE-2020-35655
++        stride = (self._size[0] * bits + 7) // 8
++        stride += stride % 2
++
+         bbox = (0, 0) + self.size
+         logger.debug("size: %sx%s", *self.size)
+ 
+-- 
+2.23.0
\ No newline at end of file
diff --git a/python-pillow.spec b/python-pillow.spec
index db15983..20d8810 100644
--- a/python-pillow.spec
+++ b/python-pillow.spec
@@ -5,7 +5,7 @@
 
 Name:               python-pillow
 Version:            5.3.0
-Release:            10
+Release:            11
 Summary:            Python image processing library
 License:            MIT
 URL:                http://python-pillow.github.io/
@@ -26,6 +26,7 @@ Patch0016:          CVE-2019-19911.patch
 Patch0017:          CVE-2020-5310.patch
 Patch0018:          CVE-2020-5312.patch
 Patch0019:          CVE-2020-5313.patch
+Patch0020:          backport-CVE-2020-35653.patch
 
 BuildRequires:      freetype-devel ghostscript lcms2-devel libimagequant-devel libjpeg-devel
 BuildRequires:      libtiff-devel libwebp-devel openjpeg2-devel tk-devel zlib-devel
@@ -179,6 +180,12 @@ popd
 %doc docs/_build_py3/html
 
 %changelog
+* Thu Jan 28 2021 renmingshuai<renmingshuai@huawei.com> - 5.3.0-11
+- Type:cves
+- ID:CVE-2020-35653
+- SUG:NA
+- DESC:fix CVE-2020-35653
+
 * Thu Nov 26 2020 shixuantong<shixuantong@huawei.com> - 5.3.0-10
 - Type:cves
 - ID:CVE-2020-5310 CVE-2020-5312 CVE-2020-5313
-- 
Gitee