** DISPUTED ** A memory leak in the __ipmi_bmc_register() function in
drivers/char/ipmi/ipmi_msghandler.c in the Linux kernel through 5.3.11
allows attackers to cause a denial of service (memory consumption) by
triggering ida_simple_get() failure, aka CID-4aa7afb0ee20. NOTE: third
parties dispute the relevance of this because an attacker cannot
realistically control this failure at probe time.

It was discovered that the IPMI message handler implementation in the Linux
kernel did not properly deallocate memory in certain situations. A local
attacker could use this to cause a denial of service (kernel memory
exhaustion).