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Do not create core image in TIFF seek() #8392

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Merged
hugovk merged 1 commit into from
Oct 12, 2024
+6 −5
Merged

Do not create core image in TIFF seek() #8392

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11 changes: 6 additions & 5 deletions src/PIL/TiffImagePlugin.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1193,11 +1193,11 @@ def seek(self, frame: int) -> None:
if not self._seek_check(frame):
return
self._seek(frame)
# Create a new core image object on second and
# subsequent frames in the image. Image may be
# different size/mode.
Image._decompression_bomb_check(self._tile_size)
self.im = Image.core.new(self.mode, self._tile_size)
if self._im is not None and (
self.im.size != self._tile_size or self.im.mode != self.mode
):
# The core image will no longer be used
self._im = None

def _seek(self, frame: int) -> None:
self.fp = self._fp
Expand Down Expand Up @@ -1279,6 +1279,7 @@ def load(self) -> Image.core.PixelAccess | None:

def load_prepare(self) -> None:
if self._im is None:
Image._decompression_bomb_check(self._tile_size)
self.im = Image.core.new(self.mode, self._tile_size)
ImageFile.ImageFile.load_prepare(self)

Expand Down