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CVE-2022-48878— Bluetooth: hci_qca: Fix driver shutdown on closed serdev

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于 Bluetooth 组件在驱动关闭时存在释放后重用问题。

CVSS 7.8 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5< e84ec6e25df9bb0968599e92eacedaf3a0a5b587 affected
7e7bbddd029b644f00f0ffbfbc485ed71977d0d5< 908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3 affected
7e7bbddd029b644f00f0ffbfbc485ed71977d0d5< ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447 affected
7e7bbddd029b644f00f0ffbfbc485ed71977d0d5< 272970be3dabd24cbe50e393ffee8f04aec3b9a8 affected
5.8 affected
< 5.8 unaffected
5.10.165≤ 5.10.* unaffected
5.15.90≤ 5.15.* unaffected
… +2 more rows
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I. Basic Information for CVE-2022-48878

Vulnerability Information
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Vulnerability Title
Bluetooth: hci_qca: Fix driver shutdown on closed serdev
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于 Bluetooth 组件在驱动关闭时存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 ~ e84ec6e25df9bb0968599e92eacedaf3a0a5b587 -
Linux Linux 5.8 -

II. Public POCs for CVE-2022-48878

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III. Intelligence Information for CVE-2022-48878

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Other References for CVE-2022-48878 (4)

Same Patch Batch · Linux · 2024-08-21 · 68 CVEs total

CVE-2024-43881 8.8 HIGH wifi: ath12k: change DMA direction while mapping reinjected packets
CVE-2023-52910 8.8 HIGH iommu/iova: Fix alloc iova overflows issue
CVE-2022-48871 8.8 HIGH tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer
CVE-2024-43878 8.1 HIGH xfrm: Fix input error path memory access
CVE-2022-48883 7.8 HIGH net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent
CVE-2024-43877 7.8 HIGH media: pci: ivtv: Add check for DMA map result
CVE-2022-48892 7.8 HIGH sched/core: Fix use-after-free bug in dup_user_cpus_ptr()
CVE-2023-52913 7.8 HIGH drm/i915: Fix potential context UAFs
CVE-2024-43880 7.8 HIGH mlxsw: spectrum_acl_erp: Fix object nesting warning
CVE-2024-43882 7.8 HIGH exec: Fix ToCToU between perm check and set-uid/gid usage
CVE-2022-48899 7.8 HIGH drm/virtio: Fix GEM handle creation UAF
CVE-2022-48872 7.8 HIGH misc: fastrpc: Fix use-after-free race condition for maps
CVE-2022-48873 7.8 HIGH misc: fastrpc: Don't remove map on creater_process and device_release
CVE-2022-48874 7.8 HIGH misc: fastrpc: Fix use-after-free and race in fastrpc_map_find
CVE-2023-52903 7.8 HIGH io_uring: lock overflowing for IOPOLL
CVE-2022-48887 7.8 HIGH drm/vmwgfx: Remove rcu locks from user resources
CVE-2023-52907 7.8 HIGH nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame()
CVE-2024-43872 7.5 HIGH RDMA/hns: Fix soft lockup under heavy CEQE load
CVE-2023-52909 7.5 HIGH nfsd: fix handling of cached open files in nfsd4_open codepath
CVE-2023-52897 btrfs: qgroup: do not warn on record without old_roots populated

Showing top 20 of 68 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48878

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