Page MenuHomeFreeBSD
Differential D53540

tcp: drop SYN ACK segment for listening sockets
ClosedPublic
Actions

Authored by tuexen on Nov 2 2025, 7:48 PM.
Tags
None
Referenced Files
F162632502: D53540.diff
Wed, Jul 15, 6:53 AM
F162632501: D53540.diff
Wed, Jul 15, 6:53 AM
F162579549: D53540.id165691.diff
Tue, Jul 14, 6:05 PM
F162568500: D53540.diff
Tue, Jul 14, 3:33 PM
Unknown Object (File)
Fri, Jul 3, 9:35 PM
Unknown Object (File)
Fri, Jul 3, 9:31 PM
Unknown Object (File)
Fri, Jul 3, 8:41 PM
Unknown Object (File)
Fri, Jul 3, 8:38 PM
View All 91 Files
Subscribers
glebius
imp
melifaro

Details

Reviewers
nickbanks_netflix.com
rrs
rscheff
peter.lei_ieee.org
Group Reviewers
transport
Commits
rGbd4cf77ba2bb: tcp: drop SYN ACK segment for listening sockets
rGe082156ae14b: tcp: drop SYN ACK segment for listening sockets
rGb1ed408e0346: tcp: drop SYN ACK segment for listening sockets
rG239464e99321: tcp: drop SYN ACK segment for listening sockets
Summary

When a SYN ACK is received for a listening socket, just drop it instead of killing the SYN-cache entry and send a RST. This closes the possibility to kill a TCP connection during its handling in the SYN-cache.

Diff Detail

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

Revision Contents
Changeset List

PathSize
sys/
netinet/
5 lines
1 line
17 lines

Diff 165728

View Options

sys/netinet/tcp_input.c

Loading...
View Options

sys/netinet/tcp_syncache.h

Loading...
View Options

sys/netinet/tcp_syncache.c

Loading...