Commit 45607f8b5 for imagemagick.org

commit 45607f8b5aea3f8766dd52e4c9d7ff1c8ca71601
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Tue Nov 10 10:56:51 2026 -0500

    https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-g3c3-wcx5-7qrw

diff --git a/coders/heic.c b/coders/heic.c
index 3b9a5bab2..4a1b2c964 100644
--- a/coders/heic.c
+++ b/coders/heic.c
@@ -931,12 +931,18 @@ static MagickBooleanType ReadHEICSequenceFrames(const ImageInfo *image_info,
     has_alpha=heif_image_has_channel(heif_image,heif_channel_Alpha);
     number_channels=has_alpha != 0 ? 4 : 3;
     for (c=0; c < number_channels; c++)
-      {
-        bits_per_pixel[c]=heif_image_get_bits_per_pixel_range(heif_image,
-          channels[c]);
-        if ((bits_per_pixel[c] <= 0) || (bits_per_pixel[c] > 16))
-          break;
-      }
+    {
+      int plane_width = heif_image_get_width(heif_image,channels[c]);
+      int plane_height = heif_image_get_height(heif_image,channels[c]);
+      if ((plane_width <= 0) || (plane_height <= 0) ||
+          ((size_t) plane_width < image->columns) ||
+          ((size_t) plane_height < image->rows))
+        break;
+      bits_per_pixel[c]=heif_image_get_bits_per_pixel_range(heif_image,
+        channels[c]);
+      if ((bits_per_pixel[c] <= 0) || (bits_per_pixel[c] > 16))
+        break;
+     }
     if (c != number_channels)
       {
         (void) ThrowMagickException(exception,GetMagickModule(),