Cisco Bug: CSCuj09602 - C3900e crashed at "ddns_destroy_io_process"
Jun 13, 2019
- Cisco IOS
Known Affected Releases
Symptom: IOS router may crash unexpectedly due to memory corruption in the DHCPD Dynamic Update process. Conditions: Dynamic DNS must be configured on the router. The crash occurs due to a timing issue. The DHCPD Dynamic Update process queues dynamic DHCP bindings for processing; however, if a binding is being destroyed, there is still a chance (under certain timing conditions) that it may be queued for DDNS processing. The crash will occur when the already-freed binding is accessed during DDNS processing.
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Bug Details Include
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