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FN414 - Memory Leak in HAL Process in EXOS 16.1.4

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TitleFN414 - Memory Leak in HAL Process in EXOS 16.1.4
Symptoms
Memory leak observed in HAL process while deleting FDB entries or performing MAC moves.

Memory is not properly released when deleting FDB entries or performing MAC moves. This results in memory depletion in the switch.  Depleting switch memory will result in network instability or switch reboot.
Environment
All platforms running an unpatched version of EXOS 16.1.4.2.
Cause
There are two mechanisms causing the memory leak.
  1. Memory is not being properly released in hardware when deleting FDB entries.
  2. Memory is not being properly released during MAC move event
Resolution
Update the ExtremeXOS software to v16.1.4-patch 1-3 or later.
NOTE: ExtremeXOS 16.2.x, 21.x and 22.x do not exhibit this behavior.
Additional notes
Legal Notice:
This advisory notice is provided on an “as is” basis and Extreme Networks makes no representations or warranties of any kind, expressly disclaiming the warranties of merchantability or fitness for a particular use. Use of the information provided herein or materials linked from this advisory notice is at your own risk. Extreme Networks reserves the right to change or update this document at any time, and expects to update this document as new information becomes available. The information provided herein is applicable to current Extreme Networks products identified herein and is not intended to be any representation of future functionality or compatibility with any third-party technologies referenced herein. This notice shall not change any contract or agreement that you have entered into with Extreme Networks. 

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