cbcvebase.
CVE-2022-48878
published 2024-08-21

CVE-2022-48878: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Fix driver shutdown on closed serdev The driver shutdown callback…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.24%
15.4th percentile
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Fix driver shutdown on closed serdev The driver shutdown callback (which sends EDL_SOC_RESET to the device over serdev) should not be invoked when HCI device is not open (e.g. if hci_dev_open_sync() failed), because the serdev and its TTY are not open either. Also skip this step if device is powered off (qca_power_shutdown()). The shutdown callback causes use-after-free during system reboot with Qualcomm Atheros Bluetooth: Unable to handle kernel paging request at virtual address 0072662f67726fd7 ... CPU: 6 PID: 1 Comm: systemd-shutdow Tainted: G W 6.1.0-rt5-00325-g8a5f56bcfcca #8 Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT) Call trace: tty_driver_flush_buffer+0x4/0x30 serdev_device_write_flush+0x24/0x34 qca_serdev_shutdown+0x80/0x130 [hci_uart] device_shutdown+0x15c/0x260 kernel_restart+0x48/0xac KASAN report: BUG: KASAN: use-after-free in tty_driver_flush_buffer+0x1c/0x50 Read of size 8 at addr ffff16270c2e0018 by task systemd-shutdow/1 CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted 6.1.0-next-20221220-00014-gb85aaf97fb01-dirty #28 Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT) Call trace: dump_backtrace.part.0+0xdc/0xf0 show_stack+0x18/0x30 dump_stack_lvl+0x68/0x84 print_report+0x188/0x488 kasan_report+0xa4/0xf0 __asan_load8+0x80/0xac tty_driver_flush_buffer+0x1c/0x50 ttyport_write_flush+0x34/0x44 serdev_device_write_flush+0x48/0x60 qca_serdev_shutdown+0x124/0x274 device_shutdown+0x1e8/0x350 kernel_restart+0x48/0xb0 __do_sys_reboot+0x244/0x2d0 __arm64_sys_reboot+0x54/0x70 invoke_syscall+0x60/0x190 el0_svc_common.constprop.0+0x7c/0x160 do_el0_svc+0x44/0xf0 el0_svc+0x2c/0x6c el0t_64_sync_handler+0xbc/0x140 el0t_64_sync+0x190/0x194

Affected

13 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.8-1 (bookworm)linux 6.1.8-1 (bookworm)
linuxlinux——
linuxlinux>= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < e84ec6e25df9bb0968599e92eacedaf3a0a5b587e84ec6e25df9bb0968599e92eacedaf3a0a5b587
linuxlinux>= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < 908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3
linuxlinux>= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447
linuxlinux>= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < 272970be3dabd24cbe50e393ffee8f04aec3b9a8272970be3dabd24cbe50e393ffee8f04aec3b9a8
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.8-16.1.8-1
linuxlinux_kernel>= 0 < 6.1.8-16.1.8-1
linuxlinux_kernel>= 0 < 6.1.8-16.1.8-1
linuxlinux_kernel>= 5.11 < 5.15.905.15.90
linuxlinux_kernel>= 5.16 < 6.1.86.1.8
linuxlinux_kernel>= 5.8 < 5.10.1655.10.165

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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