In the Linux kernel before 5.2.3, set_geometry in drivers/block/floppy.c does not validate the sect and head fields, as demonstrated by an integer overflow and out-of-bounds read. It can be triggered by an unprivileged local user when a floppy disk has been inserted. NOTE: QEMU creates the floppy device by default.
4.4.0-161.1894.4.0-1092.1034.15.0-1047.49~16.04.14.15.0-1056.614.15.0-1041.434.15.0-60.67~16.04.14.4.0-1056.634.15.0-1022.25~16.04.14.4.0-1120.1294.4.0-1124.130Exploitability
AV:PAC:LPR:NUI:NScope
S:UImpact
C:HI:HA:HCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H