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Code Issues Projects Releases Packages Wiki Activity Actions 9

LibGfx/TIFF: Reject images with a null value in tile's dimensions

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Fixes oss-fuzz issue 66844.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66844&sort=-opened&q=proj%3Aserenity%20TIFF&can=1
This commit is contained in:
Lucas CHOLLET 2024-03-06 21:47:29 -05:00 • committed by Tim Flynn
commit 40cf205c81
Notes: sideshowbarker 2024-07-17 02:08:15 +09:00
1 changed files with 5 additions and 2 deletions
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7
Userland/Libraries/LibGfx/ImageFormats/TIFFLoader.cpp
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@ -63,11 +63,14 @@ public:
return {};
}
ErrorOr<void> ensure_conditional_tags_are_present() const
ErrorOr<void> ensure_conditional_tags_are_correct() const
{
if (m_metadata.photometric_interpretation() == PhotometricInterpretation::RGBPalette && !m_metadata.color_map().has_value())
return Error::from_string_literal("TIFFImageDecoderPlugin: RGBPalette image doesn't contain a color map");
if (m_metadata.tile_width() == 0u || m_metadata.tile_length() == 0u)
return Error::from_string_literal("TIFFImageDecoderPlugin: Null value in tile's dimensions");
return {};
}
@ -123,7 +126,7 @@ public:
{
TRY(ensure_baseline_tags_are_present(m_metadata));
TRY(ensure_baseline_tags_are_correct());
TRY(ensure_conditional_tags_are_present());
TRY(ensure_conditional_tags_are_correct());
cache_values();
auto maybe_error = decode_frame_impl();