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Cisco Bug: CSCvi51370 - race condition can result in syslog alerts without rule messages

Last Modified

Mar 01, 2019

Products (32)

  • Cisco Firepower Management Center
  • Cisco FirePOWER Appliance 7050
  • Cisco FirePOWER Appliance 8260
  • Cisco Firepower Management Center 2500
  • Cisco FirePOWER Appliance 8360
  • Cisco FirePOWER Appliance 8120
  • Cisco AMP 7150
  • Cisco FirePOWER Appliance 8140
  • Cisco FirePOWER Appliance 8350
  • Cisco FirePOWER Appliance 8130
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Known Affected Releases

5.4.0 6.0.0 6.1.0 6.2.0 6.2.1 6.2.2 6.3.0

Description (partial)

Rule messages can, in rare conditions, be missing from syslog alerts.

If an intrusion event fires multiple times and is processed at the same time by different threads on the FMC, and the FMC does not have the rule message in its in-memory cache, threads beyond the first can try to store the rule message in the cache and fail because another thread stored it.

Subsequent occurrences of the event will not be affected as long as the rule message is in the cache.
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