Bug ID 443006: In low memory situations initializing the HTTP parser will cause the TMM to crash

Last Modified: Jul 18, 2026

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

Known Affected Versions:
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, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Opened: Jan 14, 2014

Severity: 3-Major

Symptoms

When the TMM is low in memory and HTTP is configured, the configuration process may initialize a new HTTP parser. If that initialization fails, then the TMM may crash.

Impact

Traffic disrupted while tmm restarts.

Conditions

A virtual containing HTTP is configured or re-configured when the TMM is under extreme memory pressure.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips