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python3-pillow: fix CVE-2026-40192

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Backport commit[1] which fixes this vulnerability as mentioned NVD report in [2].

[1] https://github.com/python-pillow/Pillow/commit/3cb854e8b2bab43f40e342e665f9340d861aa628
[2] https://nvd.nist.gov/vuln/detail/CVE-2026-40192
[3] https://security-tracker.debian.org/tracker/CVE-2026-40192

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
This commit is contained in:
Hitendra Prajapati
2026-04-28 11:29:53 +05:30
committed by Anuj Mittal
parent 955189fbcb
commit fdf83ebd28
2 changed files with 51 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta-python/recipes-devtools/python/python3-pillow/CVE-2026-40192.patch
+50
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@@ -0,0 +1,50 @@
From 3cb854e8b2bab43f40e342e665f9340d861aa628 Mon Sep 17 00:00:00 2001
From: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Date: Wed, 1 Apr 2026 00:02:08 +0300
Subject: [PATCH] Only read as much data from gzip-decompressed data as
necessary (#9521)
CVE: CVE-2026-40192
Upstream-Status: Backport [https://github.com/python-pillow/Pillow/commit/3cb854e8b2bab43f40e342e665f9340d861aa628]
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
---
src/PIL/FitsImagePlugin.py | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/src/PIL/FitsImagePlugin.py b/src/PIL/FitsImagePlugin.py
index 071918925..7791adc50 100644
--- a/src/PIL/FitsImagePlugin.py
+++ b/src/PIL/FitsImagePlugin.py
@@ -124,17 +124,18 @@ class FitsGzipDecoder(ImageFile.PyDecoder):
def decode(self, buffer):
assert self.fd is not None
- value = gzip.decompress(self.fd.read())
-
- rows = []
- offset = 0
- number_of_bits = min(self.args[0] // 8, 4)
- for y in range(self.state.ysize):
- row = bytearray()
- for x in range(self.state.xsize):
- row += value[offset + (4 - number_of_bits) : offset + 4]
- offset += 4
- rows.append(row)
+ with gzip.open(self.fd) as fp:
+ value = fp.read(self.state.xsize * self.state.ysize * 4)
+
+ rows = []
+ offset = 0
+ number_of_bits = min(self.args[0] // 8, 4)
+ for y in range(self.state.ysize):
+ row = bytearray()
+ for x in range(self.state.xsize):
+ row += value[offset + (4 - number_of_bits) : offset + 4]
+ offset += 4
+ rows.append(row)
self.set_as_raw(bytes([pixel for row in rows[::-1] for pixel in row]))
return -1, 0
--
2.50.1
meta-python/recipes-devtools/python/python3-pillow_10.3.0.bb
+1
View File
@@ -9,6 +9,7 @@ SRC_URI = "git://github.com/python-pillow/Pillow.git;branch=main;protocol=https
file://0001-support-cross-compiling.patch \
file://run-ptest \
file://CVE-2026-25990.patch \
file://CVE-2026-40192.patch \
"
SRCREV = "5c89d88eee199ba53f64581ea39b6a1bc52feb1a"