BugZero | Cisco BugID CSCwb29666 - memory fragmentation due to nbar process.

Cisco - Defect ID: CSCwb29666

memory fragmentation due to nbar process.

Cisco - Defect ID: CSCwb29666

memory fragmentation due to nbar process.

Last updated on May 11th, 2026

BugZero Risk Score
7.8 High

Overall: 7.8

Severity: 8.2

Lifecycle: 9.1

Popularity: 5.1

What is the BugZero Risk Score?

Cisco Integration

Learn more about where this data comes from

Cisco Integration

Learn more

BugZero Plan

Streamline upgrades with automated vendor bug scrubs

BugZero Plan

Learn more

BugZero Prevent

Wish you caught this bug sooner? Get proactive today.

BugZero Prevent

Learn more

Bug Details

Description

Symptom

* memory fragmentation errors seen. * Malloc fail.

Conditions

* NBAR is present.

Workaround

* No specific workaround is known so far.

Further Problem Description

Change history

2026-05-11 Added: 17.12.4

2026-05-04 Added: 17.12.4

2026-02-25 Added: 17.12.4

2025-12-29 Added: 17.15.3, 17.3.4, 17.6.4

Relevant Products

Click on a version to see all relevant bugs

Affected versions:17.12.4, 17.15.3, 17.3.4, 17.6.4

Fixed versions: 17.3.6, 17.6.4, Amsterdam-17.3.6, Bengaluru-17.6.4

Relevant Products

Click on a version to see all relevant bugs

Affected versions:17.12.4, 17.15.3, 17.3.4, 17.6.4

Fixed versions: 17.3.6, 17.6.4, Amsterdam-17.3.6, Bengaluru-17.6.4

Top Cisco Defects

9.7Defect ID: CSCwt50498
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
9.7Defect ID: CSCws61409
Live Logs Not Displaying on GUI Due to Fast Expansion of MNT Database
9.7Defect ID: CSCwa70008
Expired certs cause Security Intelligence updates to fail
9.7Defect ID: CSCvf67718
[ACI]The Fabric module was crashed and reloaded because the PCIE Uncorrectable error encountered.
9.7Defect ID: CSCux29978
Cisco ASA IKEv1 and IKEv2 Buffer Overflow Vulnerability

Ready to prevent the next vendor outage?

Get a demo

Cisco - Defect ID: CSCwb29666

memory fragmentation due to nbar process.

Cisco - Defect ID: CSCwb29666

memory fragmentation due to nbar process.

Last updated on May 11th, 2026

BugZero Risk Score7.8 High

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Top Cisco Defects

Ready to prevent the next vendor outage?

Links

BugZero Risk Score
7.8 High