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Raise ValueError when WMF inch is zero (#8600)

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Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>
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Andrew Murray 2024-12-18 17:08:51 +11:00 committed by GitHub
parent de8335ba8f
commit cbc55c4621
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2 changed files with 10 additions and 0 deletions
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7
Tests/test_file_wmf.py
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@ -35,6 +35,13 @@ def test_load() -> None:
assert im.load()[0, 0] == (255, 255, 255) assert im.load()[0, 0] == (255, 255, 255)
def test_load_zero_inch() -> None:
b = BytesIO(b"\xd7\xcd\xc6\x9a\x00\x00" + b"\x00" * 10)
with pytest.raises(ValueError):
with Image.open(b):
pass
def test_register_handler(tmp_path: Path) -> None: def test_register_handler(tmp_path: Path) -> None:
class TestHandler(ImageFile.StubHandler): class TestHandler(ImageFile.StubHandler):
methodCalled = False methodCalled = False

3
src/PIL/WmfImagePlugin.py
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@ -92,6 +92,9 @@ class WmfStubImageFile(ImageFile.StubImageFile):
# get units per inch # get units per inch
self._inch = word(s, 14) self._inch = word(s, 14)
if self._inch == 0:
msg = "Invalid inch"
raise ValueError(msg)
# get bounding box # get bounding box
x0 = short(s, 6) x0 = short(s, 6)