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tiff.24921
tiff-CVE-2022-0865.patch
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File tiff-CVE-2022-0865.patch of Package tiff.24921
Index: tiff-4.0.9/libtiff/tif_jbig.c =================================================================== --- tiff-4.0.9.orig/libtiff/tif_jbig.c +++ tiff-4.0.9/libtiff/tif_jbig.c @@ -210,6 +210,16 @@ int TIFFInitJBIG(TIFF* tif, int scheme) */ tif->tif_flags |= TIFF_NOBITREV; tif->tif_flags &= ~TIFF_MAPPED; + /* We may have read from a previous IFD and thus set TIFF_BUFFERMMAP and + * cleared TIFF_MYBUFFER. It is necessary to restore them to their initial + * value to be consistent with the state of a non-memory mapped file. + */ + if (tif->tif_flags&TIFF_BUFFERMMAP) { + tif->tif_rawdata = NULL; + tif->tif_rawdatasize = 0; + tif->tif_flags &= ~TIFF_BUFFERMMAP; + tif->tif_flags |= TIFF_MYBUFFER; + } /* Setup the function pointers for encode, decode, and cleanup. */ tif->tif_setupdecode = JBIGSetupDecode;
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