In the AppleTalk subsystem in the Linux kernel before 5.1, there is a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122.
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < e04642a207f1d2ae28a08624c04c67f5681f3451 |