CVE-2023-53046— Bluetooth: Fix race condition in hci_cmd_sync_clear
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I. Basic Information for CVE-2023-53046
Vulnerability Information
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Vulnerability Title
Bluetooth: Fix race condition in hci_cmd_sync_clear
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix race condition in hci_cmd_sync_clear There is a potential race condition in hci_cmd_sync_work and hci_cmd_sync_clear, and could lead to use-after-free. For instance, hci_cmd_sync_work is added to the 'req_workqueue' after cancel_work_sync The entry of 'cmd_sync_work_list' may be freed in hci_cmd_sync_clear, and causing kernel panic when it is used in 'hci_cmd_sync_work'. Here's the call trace: dump_stack_lvl+0x49/0x63 print_report.cold+0x5e/0x5d3 ? hci_cmd_sync_work+0x282/0x320 kasan_report+0xaa/0x120 ? hci_cmd_sync_work+0x282/0x320 __asan_report_load8_noabort+0x14/0x20 hci_cmd_sync_work+0x282/0x320 process_one_work+0x77b/0x11c0 ? _raw_spin_lock_irq+0x8e/0xf0 worker_thread+0x544/0x1180 ? poll_idle+0x1e0/0x1e0 kthread+0x285/0x320 ? process_one_work+0x11c0/0x11c0 ? kthread_complete_and_exit+0x30/0x30 ret_from_fork+0x22/0x30 </TASK> Allocated by task 266: kasan_save_stack+0x26/0x50 __kasan_kmalloc+0xae/0xe0 kmem_cache_alloc_trace+0x191/0x350 hci_cmd_sync_queue+0x97/0x2b0 hci_update_passive_scan+0x176/0x1d0 le_conn_complete_evt+0x1b5/0x1a00 hci_le_conn_complete_evt+0x234/0x340 hci_le_meta_evt+0x231/0x4e0 hci_event_packet+0x4c5/0xf00 hci_rx_work+0x37d/0x880 process_one_work+0x77b/0x11c0 worker_thread+0x544/0x1180 kthread+0x285/0x320 ret_from_fork+0x22/0x30 Freed by task 269: kasan_save_stack+0x26/0x50 kasan_set_track+0x25/0x40 kasan_set_free_info+0x24/0x40 ____kasan_slab_free+0x176/0x1c0 __kasan_slab_free+0x12/0x20 slab_free_freelist_hook+0x95/0x1a0 kfree+0xba/0x2f0 hci_cmd_sync_clear+0x14c/0x210 hci_unregister_dev+0xff/0x440 vhci_release+0x7b/0xf0 __fput+0x1f3/0x970 ____fput+0xe/0x20 task_work_run+0xd4/0x160 do_exit+0x8b0/0x22a0 do_group_exit+0xba/0x2a0 get_signal+0x1e4a/0x25b0 arch_do_signal_or_restart+0x93/0x1f80 exit_to_user_mode_prepare+0xf5/0x1a0 syscall_exit_to_user_mode+0x26/0x50 ret_from_fork+0x15/0x30
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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hci_cmd_sync_clear函数存在竞态条件，可能导致释放后重用。
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
II. Public POCs for CVE-2023-53046
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Same Patch Batch · Linux · 2025-05-02 · 107 CVEs total
| CVE-2023-53102 | ice: xsk: disable txq irq before flushing hw | |
| CVE-2023-53115 | scsi: mpi3mr: Fix memory leaks in mpi3mr_init_ioc() | |
| CVE-2023-53114 | i40e: Fix kernel crash during reboot when adapter is in recovery mode | |
| CVE-2023-53112 | drm/i915/sseu: fix max_subslices array-index-out-of-bounds access | |
| CVE-2023-53113 | wifi: nl80211: fix NULL-ptr deref in offchan check | |
| CVE-2023-53111 | loop: Fix use-after-free issues | |
| CVE-2023-53109 | net: tunnels: annotate lockless accesses to dev->needed_headroom | |
| CVE-2023-53110 | net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler() | |
| CVE-2023-53108 | net/iucv: Fix size of interrupt data | |
| CVE-2023-53106 | nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition | |
| CVE-2023-53107 | veth: Fix use after free in XDP_REDIRECT | |
| CVE-2023-53105 | net/mlx5e: Fix cleanup null-ptr deref on encap lock | |
| CVE-2023-53103 | bonding: restore bond's IFF_SLAVE flag if a non-eth dev enslave fails | |
| CVE-2023-53101 | ext4: zero i_disksize when initializing the bootloader inode | |
| CVE-2023-53091 | ext4: update s_journal_inum if it changes after journal replay | |
| CVE-2023-53094 | tty: serial: fsl_lpuart: fix race on RX DMA shutdown | |
| CVE-2023-53092 | interconnect: exynos: fix node leak in probe PM QoS error path | |
| CVE-2023-53093 | tracing: Do not let histogram values have some modifiers | |
| CVE-2023-53095 | drm/ttm: Fix a NULL pointer dereference | |
| CVE-2023-53090 | drm/amdkfd: Fix an illegal memory access |
Showing top 20 of 107 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2023-53046
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