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.

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.

Security update for the Linux Kernel

kernel: out of bound read in DVB connexant driver. kernel: Missing permissions check for request_key() destination allows local attackers to add keys to keyring without Write permission kernel: denial of service via ioctl call in network tun handling kernel: oob memory read in hso_probe in drivers/net/usb/hso.c kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS kernel: perf_event_open() and execve() race in setuid programs allows a data leak kernel: brcmfmac frame validation bypass kernel: null-pointer dereference in hci_uart_set_flow_control Kernel: net: weak IP ID generation leads to remote device tracking Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR kernel: ASLR bypass for setuid binaries due to late install_exec_creds() kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service kernel: use-after-free in arch/x86/lib/insn-eval.c kernel: integer overflow and OOB read in drivers/block/floppy.c kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS kernel: Null pointer dereference in the sound/usb/line6/pcm.c kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service kernel: buffer-overflow hardening in WiFi beacon validation code.

Security update for the Linux Kernel

Affected: Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-aws-hwe, Ubuntu:16.04:LTS: linux-azure, Ubuntu:16.04:LTS: linux-gcp, Ubuntu:16.04:LTS: linux-hwe and 31 more

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.