Page MenuHomeFreeBSD

tcp: Rack compressed ack path updates the recv window too easily
ClosedPublic

Authored by rrs on Sep 23 2021, 3:16 PM.
Tags
None
Referenced Files
Unknown Object (File)
Mon, Mar 2, 5:06 AM
Unknown Object (File)
Tue, Feb 24, 3:44 PM
Unknown Object (File)
Tue, Feb 24, 1:54 AM
Unknown Object (File)
Tue, Feb 24, 1:54 AM
Unknown Object (File)
Mon, Feb 23, 6:48 PM
Unknown Object (File)
Feb 13 2026, 11:16 AM
Unknown Object (File)
Jan 30 2026, 10:09 PM
Unknown Object (File)
Dec 28 2025, 7:21 PM
Subscribers

Details

Summary

The compressed ack path of rack is not following proper procedures in updating
the peers window. It should be checking the seq and ack values before updating and
instead it is blindly updating the values. This could in theory get the wrong window
in the connection for some length of time.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable