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Treat unknown JPEG2000 colorspace as unspecified #8343

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merged 1 commit into from
Sep 3, 2024
+11 −3
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Treat unknown JPEG2000 colorspace as unspecified #8343

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9 changes: 9 additions & 0 deletions Tests/test_file_jpeg2k.py
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Original file line number Diff line number Diff line change
Expand Up @@ -182,6 +182,15 @@ def test_restricted_icc_profile() -> None:
ImageFile.LOAD_TRUNCATED_IMAGES = False


@pytest.mark.skipif(
not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
)
def test_unknown_colorspace() -> None:
with Image.open(f"{EXTRA_DIR}/file8.jp2") as im:
im.load()
assert im.mode == "L"


def test_header_errors() -> None:
for path in (
"Tests/images/invalid_header_length.jp2",
Expand Down
5 changes: 2 additions & 3 deletions src/libImaging/Jpeg2KDecode.c
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Expand Up @@ -698,8 +698,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
}

/* Check that this image is something we can handle */
if (image->numcomps < 1 || image->numcomps > 4 ||
image->color_space == OPJ_CLRSPC_UNKNOWN) {
if (image->numcomps < 1 || image->numcomps > 4) {
state->errcode = IMAGING_CODEC_BROKEN;
state->state = J2K_STATE_FAILED;
goto quick_exit;
Expand Down Expand Up @@ -744,7 +743,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
/* Find the correct unpacker */
color_space = image->color_space;

if (color_space == OPJ_CLRSPC_UNSPECIFIED) {
if (color_space == OPJ_CLRSPC_UNKNOWN || color_space == OPJ_CLRSPC_UNSPECIFIED) {
switch (image->numcomps) {
case 1:
case 2:
Expand Down
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