Bug ID 1111149: Nlad core observed due to ERR_func_error_string can return NULL

Last Modified: May 29, 2024

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

Known Affected Versions:
15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2

Fixed In:
17.1.1, 16.1.4, 15.1.9

Opened: May 31, 2022

Severity: 2-Critical

Symptoms

The following symptoms are observed In /var/log/ltm: err nlad[17535]: OpenSSL: DRBG Continuous RNG test failed: DRBG stuck. Nlad core is observed /var/log/kern.log:Apr 7 03:46:53 <vs name > info kernel: nlad[13119]: segfault at 0 ip <> sp <> error 4.

Impact

Core results in disruption of APM sessions

Conditions

NLAD core is SIGSEGV - crashing while processing a SSL Certificate via a SAML login.

Workaround

None

Fix Information

NA

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips