Harden codec and metadata input validation - #3187

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JimBobSquarePants wants to merge 27 commits into

release/4.1.xfrom

fix/security-advisory-triage

Commits on Sep 4, 2026

Validate decoded image dimensions
JimBobSquarePants
committed
7781fbd
Reject duplicate PNG headers
JimBobSquarePants
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23ed0b0
Use wide arithmetic for PNG scanline lengths
JimBobSquarePants
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ea0475e
Cover large PNG average-filter scanlines
JimBobSquarePants
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0446ba0
Validate WebP metadata chunk lengths
JimBobSquarePants
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2b52b55
Validate embedded profile extents
JimBobSquarePants
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14ddc15
Apply EXIF part selection when encoding WebP
JimBobSquarePants
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84613d4
Validate ICC CLUT storage before allocation
JimBobSquarePants
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8de892a
Reject undersized ICC tag entries
JimBobSquarePants
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73d8e02
Bound BigTIFF directory entry counts
JimBobSquarePants
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92b12d7
Clamp histogram luminance indices
JimBobSquarePants
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c4c4bf2
Size CCITT encoder output buffers
JimBobSquarePants
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a9498c6
Cover narrow CCITT Group 4 re-encoding
JimBobSquarePants
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cdc79d0
Reject unsupported ICC conversion channels
JimBobSquarePants
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b03f0ed
Reject short EXR ZIP output
JimBobSquarePants
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3c43cf5
Handle partial EXR scanline blocks
JimBobSquarePants
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6ed2a27
Normalize metadata extents and preserve decoder recovery policies
JimBobSquarePants
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18532d7
Apply EXIF part selection at serialization boundary
JimBobSquarePants
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b335b8a
Restore WebP ICC framing comments
JimBobSquarePants
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584b662

Commits on Sep 5, 2026