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openSUSE:Maintenance:7622
gdk-pixbuf.openSUSE_Leap_42.3_Update
gdk-pixbuf-cve-2017-6312-ico-integer-overflow.p...
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File gdk-pixbuf-cve-2017-6312-ico-integer-overflow.patch of Package gdk-pixbuf.openSUSE_Leap_42.3_Update
diff --git a/gdk-pixbuf/io-ico.c b/gdk-pixbuf/io-ico.c index 924d3d1..3abf140 100644 --- a/gdk-pixbuf/io-ico.c +++ b/gdk-pixbuf/io-ico.c @@ -318,10 +318,7 @@ static void DecodeHeader(guchar *Data, gint Bytes, return; } - /* We know how many bytes are in the "header" part. */ - State->HeaderSize = entry->DIBoffset + 40; /* 40 = sizeof(InfoHeader) */ - - if (State->HeaderSize < 0) { + if (entry->DIBoffset > G_MAXINT - 40) { g_set_error_literal (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, @@ -329,6 +326,9 @@ static void DecodeHeader(guchar *Data, gint Bytes, return; } + /* We know how many bytes are in the "header" part. */ + State->HeaderSize = entry->DIBoffset + 40; + if (State->HeaderSize>State->BytesInHeaderBuf) { guchar *tmp=g_try_realloc(State->HeaderBuf,State->HeaderSize); if (!tmp) {
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