CVE-2022-48878 (GCVE-0-2022-48878)
Vulnerability from cvelistv5
Published
2024-08-21 06:10
Modified
2026-08-05 08:52
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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
References
Impacted products
Vendor Product Version
Linux Linux Version: 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5
Version: 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5
Version: 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5
Version: 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_qca: Fix driver shutdown on closed serdev\n\nThe driver shutdown callback (which sends EDL_SOC_RESET to the device\nover serdev) should not be invoked when HCI device is not open (e.g. if\nhci_dev_open_sync() failed), because the serdev and its TTY are not open\neither.  Also skip this step if device is powered off\n(qca_power_shutdown()).\n\nThe shutdown callback causes use-after-free during system reboot with\nQualcomm Atheros Bluetooth:\n\n  Unable to handle kernel paging request at virtual address\n  0072662f67726fd7\n  ...\n  CPU: 6 PID: 1 Comm: systemd-shutdow Tainted: G        W\n  6.1.0-rt5-00325-g8a5f56bcfcca #8\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   tty_driver_flush_buffer+0x4/0x30\n   serdev_device_write_flush+0x24/0x34\n   qca_serdev_shutdown+0x80/0x130 [hci_uart]\n   device_shutdown+0x15c/0x260\n   kernel_restart+0x48/0xac\n\nKASAN report:\n\n  BUG: KASAN: use-after-free in tty_driver_flush_buffer+0x1c/0x50\n  Read of size 8 at addr ffff16270c2e0018 by task systemd-shutdow/1\n\n  CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted\n  6.1.0-next-20221220-00014-gb85aaf97fb01-dirty #28\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   dump_backtrace.part.0+0xdc/0xf0\n   show_stack+0x18/0x30\n   dump_stack_lvl+0x68/0x84\n   print_report+0x188/0x488\n   kasan_report+0xa4/0xf0\n   __asan_load8+0x80/0xac\n   tty_driver_flush_buffer+0x1c/0x50\n   ttyport_write_flush+0x34/0x44\n   serdev_device_write_flush+0x48/0x60\n   qca_serdev_shutdown+0x124/0x274\n   device_shutdown+0x1e8/0x350\n   kernel_restart+0x48/0xb0\n   __do_sys_reboot+0x244/0x2d0\n   __arm64_sys_reboot+0x54/0x70\n   invoke_syscall+0x60/0x190\n   el0_svc_common.constprop.0+0x7c/0x160\n   do_el0_svc+0x44/0xf0\n   el0_svc+0x2c/0x6c\n   el0t_64_sync_handler+0xbc/0x140\n   el0t_64_sync+0x190/0x194"
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    "dateUpdated": "2026-08-05T08:52:46.199Z",
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Also skip this step if device is powered off\\n(qca_power_shutdown()).\\n\\nThe shutdown callback causes use-after-free during system reboot with\\nQualcomm Atheros Bluetooth:\\n\\n  Unable to handle kernel paging request at virtual address\\n  0072662f67726fd7\\n  ...\\n  CPU: 6 PID: 1 Comm: systemd-shutdow Tainted: G        W\\n  6.1.0-rt5-00325-g8a5f56bcfcca #8\\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\\n  Call trace:\\n   tty_driver_flush_buffer+0x4/0x30\\n   serdev_device_write_flush+0x24/0x34\\n   qca_serdev_shutdown+0x80/0x130 [hci_uart]\\n   device_shutdown+0x15c/0x260\\n   kernel_restart+0x48/0xac\\n\\nKASAN report:\\n\\n  BUG: KASAN: use-after-free in tty_driver_flush_buffer+0x1c/0x50\\n  Read of size 8 at addr ffff16270c2e0018 by task systemd-shutdow/1\\n\\n  CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted\\n  6.1.0-next-20221220-00014-gb85aaf97fb01-dirty #28\\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\\n  Call trace:\\n   dump_backtrace.part.0+0xdc/0xf0\\n   show_stack+0x18/0x30\\n   dump_stack_lvl+0x68/0x84\\n   print_report+0x188/0x488\\n   kasan_report+0xa4/0xf0\\n   __asan_load8+0x80/0xac\\n   tty_driver_flush_buffer+0x1c/0x50\\n   ttyport_write_flush+0x34/0x44\\n   serdev_device_write_flush+0x48/0x60\\n   qca_serdev_shutdown+0x124/0x274\\n   device_shutdown+0x1e8/0x350\\n   kernel_restart+0x48/0xb0\\n   __do_sys_reboot+0x244/0x2d0\\n   __arm64_sys_reboot+0x54/0x70\\n   invoke_syscall+0x60/0x190\\n   el0_svc_common.constprop.0+0x7c/0x160\\n   do_el0_svc+0x44/0xf0\\n   el0_svc+0x2c/0x6c\\n   el0t_64_sync_handler+0xbc/0x140\\n   el0t_64_sync+0x190/0x194\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.165\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.90\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.8\", \"versionStartIncluding\": \"5.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"5.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:52:46.199Z\"}}}",
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