Bug ID 540484: "show sys pptp-call-info" command can cause tmm crash

Last Modified: Jul 18, 2026

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

Known Affected Versions:
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, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4

Fixed In:
12.1.0, 11.6.1, 11.5.4

Opened: Aug 18, 2015

Severity: 2-Critical

Related Article: K04005785

Symptoms

Core when "show sys pptp-call-info" is called.

Impact

Traffic disrupted while tmm restarts.

Conditions

On BIG-IP with fastl4 virtual server forwarding PPTP GRE traffic, TMSH "show sys pptp-call-info" command can cause crash in TMM.

Workaround

Do not issue "show sys pptp-call-info" command on BIG-IP forwarding PPTP GRE traffic.

Fix Information

Fixed crash from incorrectly matching PPTP ALG traffic in forwarding fastl4 virtual server.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips