Bug ID 2246933: Memory leak in QUIC under rare sequence of packets/events

Last Modified: Sep 18, 2026

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

Known Affected Versions:
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, 17.1.3.1, 17.1.3.2, 17.1.3.4, 17.1.3.5, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 17.5.1.9, 21.0.0, 21.0.0.1, 21.0.0.2, 21.0.0.3

Fixed In:
21.1.0

Opened: Mar 17, 2026

Severity: 2-Critical

Symptoms

QUIC experiences a slow/small memory leak.

Impact

TMM crashes due to OOM.

Conditions

On a system with heavy load on crypto operations, QUIC will leak some data on specific rare sequence of packets/events which can exhaust the memory slowly and eventually could lead to a crash due to OOM.

Workaround

None

Fix Information

QUIC handles rare sequence of packets/events without a leak.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips