Cisco Cisco IOS Software Releases 12.2 MC

CSCeb76514

Description: The checkheaps process detects corrupted memory and when packets back up into the 
bundle output hold queue, causes a router reload. 

Workaround: A software workaround (CSCeb74020) is implemented in Cisco IOS 12.2(15)MC1.

This section lists the caveats resolved in Cisco IOS Release 12.2(15)MC2a.

CSCdz32659

Description: Memory allocation failure (MALLOCFAIL) messages no longer occur for Cisco 
Discovery Protocol (CDP) processes. 

CSCec16481

A Cisco device running Internetwork Operating System (IOS) and enabled for the Open Shortest 
Path First (OSPF) Protocol is vulnerable to a Denial of Service (DoS) attack from a malformed 
OSPF packet. The OSPF protocol is not enabled by default.

The vulnerability is only present in IOS release trains based on 12.0S, 12.2, and 12.3. Releases based 
on 12.0, 12.1 mainlines and all IOS images prior to 12.0 are not affected. Refer to the Security 
Advisory for a complete list of affected release trains.

Further details and the workarounds to mitigate the effects are explained in the Security Advisory 
which is available at the following URL:

.

CSCec21937

Description: When the MGX-RPM-1FE-CP FastEthernet interface is administratively shut down, 
for directly connected devices, the interface still appears to be up.

CSCec25430

Description: A Cisco device reloads on receipt of a corrupt CDP packet.

CSCed40563

Description: Problems with the CDP protocol have been resolved. 

CSCin67568

Description: A Cisco device experiences a memory leak in the CDP process. The device sending 
CDP packets sends a hostname that is 256 or more characters. There are no problems with a 
hostname of 255 or fewer characters. 

This section contains the following MGX-RPM-1FE-CP troubleshooting information: