Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.3.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4
Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3
Opened: Oct 08, 2014 Severity: 3-Major Related Article:
K16814
Due to the incorrect MSS value, TMM might core because based on the MSS value the outgoing packet attempts to use TSO, which is not correct. This can result in a crash.
If this issue occurs, then TMM will core resulting in a failover/reboot of the system.
A virtual using fastL4 where a SYN packet with options is received, but the SYN packet does not contain an MSS option.
None.
The correct MSS value is now used when SYN has options without MSS specified, so TMM no longer cores.