1 files changed, 94 insertions, 0 deletions
diff --git a/debian/patches/plug-ins-Fix-DDS-import-regression-from-7db71cd0.patch b/debian/patches/plug-ins-Fix-DDS-import-regression-from-7db71cd0.patch
new file mode 100644
index 0000000..85e54f5
--- /dev/null
+++ b/debian/patches/plug-ins-Fix-DDS-import-regression-from-7db71cd0.patch
@@ -0,0 +1,94 @@
+From: Alx Sa <cmyk.student@gmail.com>
+Date: Fri, 27 Oct 2023 22:04:48 +0000
+Subject: plug-ins: Fix DDS import regression from 7db71cd0
+Origin: https://gitlab.gnome.org/GNOME/gimp/-/commit/e92f279c97282a2b20dca0d923db7465f2057703
+Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2023-44441
+Bug-Debian: https://bugs.debian.org/1055984
+
+@Wormnest pointed out that compressed files are likely smaller than
+width * height * bps, so our check to prevent ZDI-CAN-22093
+also caught valid files.
+The size check is removed from load_image () and moved to load_layer ()
+before the two fread() functions, as we know exactly how much we'll
+try to read at that point.
+(Backport of 8faad92e)
+---
+ plug-ins/file-dds/ddsread.c | 39 +++++++++++++++++++++++++++----------
+ 1 file changed, 29 insertions(+), 10 deletions(-)
+
+--- a/plug-ins/file-dds/ddsread.c
++++ b/plug-ins/file-dds/ddsread.c
+@@ -189,16 +189,6 @@ read_dds (gchar    *filename,
+         }
+     }
+ 
+-  /* verify header information is accurate */
+-  if (hdr.depth < 1                                       ||
+-      (hdr.pitch_or_linsize > (file_size - sizeof (hdr))) ||
+-      (((guint64) hdr.height * hdr.width * hdr.depth) > (file_size - sizeof (hdr))))
+-    {
+-      fclose (fp);
+-      g_message ("Invalid or corrupted DDS header\n");
+-      return GIMP_PDB_EXECUTION_ERROR;
+-    }
+-
+   if (hdr.pixelfmt.flags & DDPF_FOURCC)
+     {
+       /* fourcc is dXt* or rXgb */
+@@ -288,6 +278,15 @@ read_dds (gchar    *filename,
+         }
+     }
+ 
++  /* verify header information is accurate */
++  if (d.bpp < 1 ||
++      (hdr.pitch_or_linsize > (file_size - sizeof (hdr))))
++    {
++      fclose (fp);
++      g_message ("Invalid or corrupted DDS header\n");
++      return GIMP_PDB_EXECUTION_ERROR;
++    }
++
+   image = gimp_image_new (hdr.width, hdr.height, type);
+ 
+   if (image == -1)
+@@ -896,6 +895,13 @@ load_layer (FILE            *fp,
+   unsigned int   size = hdr->pitch_or_linsize >> (2 * level);
+   unsigned int   layerw;
+   int            format = DDS_COMPRESS_NONE;
++  gsize          file_size;
++  gsize          current_position;
++
++  current_position = ftell (fp);
++  fseek (fp, 0L, SEEK_END);
++  file_size = ftell (fp);
++  fseek (fp, current_position, SEEK_SET);
+ 
+   if (width < 1) width = 1;
+   if (height < 1) height = 1;
+@@ -993,6 +999,12 @@ load_layer (FILE            *fp,
+         size *= 16;
+     }
+ 
++  if (size > (file_size - current_position))
++    {
++      g_message ("Requested data exceeds size of file.\n");
++      return 0;
++    }
++
+   if ((hdr->flags & DDSD_LINEARSIZE) &&
+       !fread (buf, size, 1, fp))
+     {
+@@ -1014,6 +1026,13 @@ load_layer (FILE            *fp,
+               gimp_progress_update ((double)y / (double)hdr->height);
+             }
+ 
++          current_position = ftell (fp);
++          if ((width * d->bpp) > (file_size - current_position))
++            {
++              g_message ("Requested data exceeds size of file.\n");
++              return 0;
++            }
++
+           if ((hdr->flags & DDSD_PITCH) &&
+               !fread (buf, width * d->bpp, 1, fp))
+             {