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Fix OOB Read when writing TIFF with custom Metadata #5148

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merged 1 commit into from Dec 28, 2020
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Fix OOB Read when writing TIFF with custom Metadata #5148

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3 changes: 1 addition & 2 deletions src/libImaging/TiffDecode.c
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Expand Up @@ -573,7 +573,6 @@ int ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp) {
int ImagingLibTiffMergeFieldInfo(ImagingCodecState state, TIFFDataType field_type, int key, int is_var_length){
// Refer to libtiff docs (http://www.simplesystems.org/libtiff/addingtags.html)
TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
char field_name[10];
uint32 n;
int status = 0;

Expand All @@ -586,7 +585,7 @@ int ImagingLibTiffMergeFieldInfo(ImagingCodecState state, TIFFDataType field_typ
int passcount = 0;

TIFFFieldInfo info[] = {
{ key, readcount, writecount, field_type, FIELD_CUSTOM, 1, passcount, field_name }
{ key, readcount, writecount, field_type, FIELD_CUSTOM, 1, passcount, "CustomField" }
};

if (is_var_length) {
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