Bug ID 455138: Misconfiguring a tunnel may result in memory leak

Last Modified: Aug 19, 2026

Affected Product(s):
BIG-IP LTM(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, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Fixed In:
11.6.0

Opened: Apr 01, 2014

Severity: 2-Critical

Related Article: K15980

Symptoms

Memory leak may occur if the route for the remote endpoint of a tunnel is misconfigured (for example, when an NVGRE tunnel endpoint isn't reachable).

Impact

Memory leak could lead to system reboot.

Conditions

The route for the remote endpoint of a tunnel is misconfigured.

Workaround

Make sure that the route for the remote endpoint of a tunnel is properly configured.

Fix Information

Fixed a memory leak that occurred when the route for the remote endpoint of a tunnel was misconfigured.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips