Last Modified: Oct 05, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
21.1.0.1
Fixed In:
21.1.0.2
Opened: Aug 05, 2026 Severity: 2-Critical
TMM experiences crashes on certain platforms when the PQC DH group is utilized Note that FIPS-enabled licenses use PQC in their self-tests
TMM cores with traffic disruption With a FIPS-enabled license, there is TMM instability and a restart loop
- Enable the DH group X25519MLKEM768 on platforms that do not support the CPU feature AVX2 - This may rarely include CPUs used on hypervisor systems, but more often will be due to virtualization software not exposing the BMI2 feature set to the guest vCPUs F5 r2xx and r4xx lack BMI2
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