Is the "tcp time stamp validation issue" fixed in 5.4?

[Thomas Vogt]

Hello

I'm a bit confused about the "tcp time stamp validation bug" mentioned
in the http://www.kb.cert.org/vuls/id/637934 advisory. FreeBSD has fixed
this issue in -current (2005-04-10) and in RELENG_5 (2005-04-19). 

Is this also already fixed in 5.4? The CVS ID for tcp_input.c does not
look like this. But I'm not sure.

Regards,
Thomas