Integer Overflow and Out-of-Bounds Read in Linux Kernel Floppy Disk Driver

CVE-2019-14283 · MEDIUM Severity

AV:L/AC:L/AU:N/C:P/I:P/A:P

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.

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