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Cisco Bug: CSCuj20100 - Tracebacks, Malloc errors with ISM-VPN, very low MTU and without CEF

Last Modified

Feb 12, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

15.4(0.18)T

Description (partial)

Symptom:
%SYS-2-MALLOCFAIL, Tracebacks or Cisco VPN Internal Service Module (VPN-ISM) crashes.

Conditions:
A Cisco router with a Cisco VPN Internal Service Module installed.

If specific packet flow is passed through the VPN-ISM either:
* The VPN-ISM may crash, resulting in the software crypto engine being used.
* If CEF is disabled on the router, malloc and tracebacks may be observed.
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