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Cisco Bug: CSCsz44113 - ASA: Freeing a block can corrupt memory

Last Modified

Nov 08, 2016

Products (2)

  • Cisco ASA 5500-X Series Firewalls
  • Cisco ASA 5580 Adaptive Security Appliance

Known Affected Releases

7.0 7.1 7.2 8.0 8.0(4) 8.1

Description (partial)

The ASA may crash when a block is freed.  This particular crash is identified by a memory corruption with the pattern 0x1720 in memory.
This memory corruption is most often seen when the memory delayed-free poisoner is enabled; however, the crash could be seen whenever traffic is passing in a heavily loaded system.
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