linux/drivers/bluetooth
Ivan Pravdin 2801079119 Bluetooth: vhci: Prevent use-after-free by removing debugfs files early
Move the creation of debugfs files into a dedicated function, and ensure
they are explicitly removed during vhci_release(), before associated
data structures are freed.

Previously, debugfs files such as "force_suspend", "force_wakeup", and
others were created under hdev->debugfs but not removed in
vhci_release(). Since vhci_release() frees the backing vhci_data
structure, any access to these files after release would result in
use-after-free errors.

Although hdev->debugfs is later freed in hci_release_dev(), user can
access files after vhci_data is freed but before hdev->debugfs is
released.

Fixes: ab4e4380d4 ("Bluetooth: Add vhci devcoredump support")
Signed-off-by: Ivan Pravdin <ipravdin.official@gmail.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2025-08-29 14:47:20 -04:00
..
Kconfig
Makefile
ath3k.c
bcm203x.c
bfusb.c
bluecard_cs.c
bpa10x.c
bt3c_cs.c
btbcm.c
btbcm.h
btintel.c
btintel.h
btintel_pcie.c
btintel_pcie.h
btmrvl_debugfs.c
btmrvl_drv.h
btmrvl_main.c
btmrvl_sdio.c
btmrvl_sdio.h
btmtk.c
btmtk.h
btmtksdio.c
btmtkuart.c
btnxpuart.c
btqca.c
btqca.h
btqcomsmd.c
btrsi.c
btrtl.c
btrtl.h
btsdio.c
btusb.c
dtl1_cs.c
h4_recv.h
hci_ag6xx.c
hci_aml.c
hci_ath.c
hci_bcm.c
hci_bcm4377.c
hci_bcsp.c
hci_h4.c
hci_h5.c
hci_intel.c
hci_ldisc.c
hci_ll.c
hci_mrvl.c
hci_nokia.c
hci_qca.c
hci_serdev.c
hci_uart.h
hci_vhci.c Bluetooth: vhci: Prevent use-after-free by removing debugfs files early 2025-08-29 14:47:20 -04:00
virtio_bt.c