BugZero | F5 BugID 974205 - Unconstrained wr_urldbd size causing box to OOM

F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

Last updated on July 18th, 2026

BugZero Risk Score
6.7 Medium

Overall: 6.7

Severity: 7.3

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: Traffic Classification Engine

Description

Symptoms

The wr_urldbd processes' memory grows and can exceed 4 GB. This might cause an out-of-memory (OOM) condition when processing URLCAT requests.

Impact

The device eventually runs out of memory (OOM condition).

Conditions

This occurs when processing a large volume of distinct and valid URLCAT requests.

Workaround

Restart the wr_urldbd process: restart sys service wr_urldbd

Fix Information

Constrained the cache with Least Recently Used-based caching to prevent this issue from occurring. Added two sys DB variables: -- wr_urldbd.cloud_cache.log.level Value Range: sys db wr_urldbd.cloud_cache.log.level { value "debug" default-value "none" value-range "debug none" } -- wr_urldbd.cloud_cache.limit Value Range: sys db wr_urldbd.cloud_cache.limit { value "5500000" default-value "5500000" value-range "integer min:5000000 max:10000000" } Note: Both these variables are introduced for debugging purpose.

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:12.1.0, 12.1.0 hf1, 12.1.0 hf2, 12.1.1, 12.1.1 hf1, 12.1.1 hf2, 12.1.2, 12.1.2 hf1, 12.1.2 hf2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 13.0.0, 13.0.0 hf1, 13.0.0 hf2, 13.0.0 hf3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5

Fixed versions: 17.1.0, 16.1.4, 15.1.4, 14.1.4.4, 12.1.6

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 17.1.0, 16.1.4, 15.1.4, 14.1.4.4, 12.1.6

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F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

F5 - Defect ID: 974205

Unconstrained wr_urldbd size causing box to OOM

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.7 Medium

BugZero Risk Score
6.7 Medium