[stable-4.0] fix(thumbnails): bound declared image dimensions before decoding - #3490
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rhafer wants to merge 2 commits into
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[stable-4.0] fix(thumbnails): bound declared image dimensions before decoding#3490rhafer wants to merge 2 commits into
rhafer wants to merge 2 commits into
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The imaging build decodes the full pixel buffer from the header-declared dimensions before the existing MaxInputWidth/MaxInputHeight guard runs, so a tiny crafted file whose header declares huge dimensions forces a multi-GB allocation and can OOM the worker. Read the header with DecodeConfig and reject oversized sources before the decode allocates, in both the imaging and vips builds, and thread the limit through the audio cover-art and geogebra decoders that decode a second attacker-controlled image. (cherry picked from commit 7f687ea)
… to forbidden (cherry picked from commit 65f19b5)
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backports #3457