A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1775048]
This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (system-wide out-of-memory condition).
In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module iwlmvm. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .