Bug ID 2132209: TMM crash while sending ACKs in invalid context

Last Modified: Jan 16, 2026

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Oct 16, 2025

Severity: 3-Major

Symptoms

Tmm crashes while QUIC is trying to send an ACK in invalid context.

Impact

Traffic disrupted while tmm restarts.

Conditions

LTM configured with UDP and QUIC.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips