Bug ID 1977057: Memory leak when using an iRule to overwrite MR peer route

Last Modified: Oct 16, 2025

Affected Product(s):
BIG-IP TMOS(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, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 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, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Jul 09, 2025

Severity: 3-Major

Symptoms

Messagerouter memory consumption is excessive: tmctl memory_usage_stat -w 300 | grep 'name\|messagerou' name allocated max_allocated size slop cur_allocs tot_allocs fail_allocs type caches_used dns_qname_cache 0 0 1280 255 0 0 0 std: messagerouter 5384040 5924240 1 0 3253 122000 0 var:

Impact

Memory leak possibly leading to system overload/crash.

Conditions

'MR::message route' is used to overwrite peer route.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips