A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function indrivers/net/wireless/marvell/mwifiex/pcie.c allows attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1775115]
In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module mwifiex_pcie. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (DMA mapping error).