The saa7164_bus_get function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel through 4.11.5 allows local users to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact by changing a certain sequence-number value, aka a "double fetch" vulnerability.
Exploitability
AV:PAC:HPR:NUI:NScope
S:UImpact
C:HI:HA:H6.4/CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H