A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in
drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel through
5.3.11 allows attackers to cause a denial of service (memory consumption)
by triggering mwifiex_map_pci_memory() failures, aka CID-db8fd2cde932.

It was discovered that the Marvell Wi-Fi device driver in the Linux kernel
did not properly deallocate memory in certain error conditions. A local
attacker could use this to possibly cause a denial of service (kernel
memory exhaustion).