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Cisco Bug: CSCuq27342 - Traceback and reload triggered by failover configuration

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.1(3) 9.1(4.5) 9.2(2.8)

Description (partial)

When configuring a failover interface using the command "failover lan interface
<name> <interface>" on ASA5585, the ASA might crash with a traceback and
reload. The crash would occur righter after the software responds and executes the code for
setting up the failover interface. If a crash occurs during normal system operation then it is
not due to this bug.

Configure a failover interface using the "failover lan interface <name>
<interface>" command. The chances of a crash are statistically very low, but may
increase if traffic into the CPU from network interfaces is high. In lab testing it was only
reproducible on a single instance of 5585 and using ASDM with an HTTP interface to the device
to send over the configuration commands. In theory though it could occur through console CLI
configuration as well.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
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