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Assert JpegIFByteCount is int

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Andrew Murray 2025-01-13 07:57:28 +11:00
parent 5ad98e7abb
commit 34762ded75
1 changed files with 4 additions and 1 deletions
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src/PIL/ImageFile.py
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@ -191,7 +191,10 @@ class ImageFile(Image.Image):
if thumbnail_offset is not None:
thumbnail_offset += getattr(self, "_exif_offset", 0)
self.fp.seek(thumbnail_offset)
data = self.fp.read(ifd.get(ExifTags.Base.JpegIFByteCount))
length = ifd.get(ExifTags.Base.JpegIFByteCount)
assert isinstance(length, int)
data = self.fp.read(length)
fp = io.BytesIO(data)
with Image.open(fp) as im: