Last Modified: Jul 28, 2026
Affected Product(s):
BIG-IP PEM
Known Affected Versions:
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
Fixed In:
21.1.0.1, 21.0.0.3, 17.1.3.4
Opened: Feb 26, 2026 Severity: 2-Critical
When the webroot database (wr_urldbd) is restarted, tmm can crash.
Traffic disrupted while tmm restarts.
wr_urldbd is restarted
None
Fixed a race condition between TMM and wr_urldbd to ensure the correct shared memory is mapped while the database is actively being loaded by wr_urldbd.