File CVE-2024-28219.patch of Package python-Pillow.33206

From 2a93aba5cfcf6e241ab4f9392c13e3b74032c061 Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Thu, 22 Feb 2024 18:56:26 +1100
Subject: [PATCH] Use strncpy to avoid buffer overflow

---
 Tests/icc/sGrey-v2-nano.icc | Bin 0 -> 290 bytes
 Tests/test_imagecms.py      |   5 +++++
 src/_imagingcms.c           |   9 ++++-----
 3 files changed, 9 insertions(+), 5 deletions(-)
 create mode 100644 Tests/icc/sGrey-v2-nano.icc

Index: Pillow-9.5.0/Tests/test_imagecms.py
===================================================================
--- Pillow-9.5.0.orig/Tests/test_imagecms.py
+++ Pillow-9.5.0/Tests/test_imagecms.py
@@ -627,6 +627,11 @@ def test_constants_deprecation():
                 assert getattr(ImageCms, prefix + name) == enum[name]
 
 
+def test_long_modes() -> None:
+    p = ImageCms.getOpenProfile("Tests/icc/sGrey-v2-nano.icc")
+    ImageCms.buildTransform(p, p, "ABCDEFGHI", "ABCDEFGHI")
+
+
 @pytest.mark.parametrize("mode", ("RGB", "RGBA", "RGBX"))
 def test_rgb_lab(mode):
     im = Image.new(mode, (1, 1))
Index: Pillow-9.5.0/src/_imagingcms.c
===================================================================
--- Pillow-9.5.0.orig/src/_imagingcms.c
+++ Pillow-9.5.0/src/_imagingcms.c
@@ -201,8 +201,8 @@ cms_transform_new(cmsHTRANSFORM transfor
 
     self->transform = transform;
 
-    strcpy(self->mode_in, mode_in);
-    strcpy(self->mode_out, mode_out);
+    strncpy(self->mode_in, mode_in, 8);
+    strncpy(self->mode_out, mode_out, 8);
 
     return (PyObject *)self;
 }
@@ -242,10 +242,9 @@ findLCMStype(char *PILmode) {
         // LabX equivalent like ALab, but not reversed -- no #define in lcms2
         return (COLORSPACE_SH(PT_LabV2) | CHANNELS_SH(3) | BYTES_SH(1) | EXTRA_SH(1));
     }
-
     else {
-        /* take a wild guess... but you probably should fail instead. */
-        return TYPE_GRAY_8; /* so there's no buffer overrun... */
+        /* take a wild guess... */
+        return TYPE_GRAY_8;
     }
 }