Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - Bluetoothhci_sync修复 hci_disconnect_all_sync 中的 UAF 如果通过控制器事件的并发处理删除连接hci_disconnect_all_sync 中可能会发生释放后使用。为防止发生此问题代码现在尝试向后迭代列表以确保链接在其父项之前清除并且不再依赖于光标而是始终使用最后一个元素因为 hci_abort_conn_sync 保证会调用 hci_conn_del。UAF 崩溃日志：
    ================================================== ================ BUGKASANhci_set_ Powered_sync 中的 slab-use-after-free (net/bluetooth/hci_sync.c:5424) [bluetooth] 地址 ffff888009d9c000 处大小为 8 的读取按任务 kworker/u9:0/124 CPU: 0 PID: 124 Comm: kworker/u9:0 Tainted: GW 6.5.0-rc1+ #10 硬件名称
    QEMU Standard PC (Q35 + ICH92009), BIOS 1.16.2-1.fc38 04/01/2014 Workqueuehci0 hci_cmd_sync_work [bluetooth] 调用跟踪 <TASK> dump_stack_lvl+0x5b/0x90 print_report+0xcf/0x670 ?
    __virt_addr_valid+0xdd/0x160 hci_set_enabled_sync+0x2c9/0x4a0 [蓝牙] kasan_report+0xa6/0xe0 ? hci_set_enabled_sync+0x2c9/0x4a0 [蓝牙] ? __pfx_set_enabled_sync+0x10/0x10 [蓝牙] hci_set_enabled_sync+0x2c9/0x4a0 [蓝牙] ? __pfx_hci_set_enabled_sync+0x10/0x10 [蓝牙] ?
    __pfx_lock_release+0x10/0x10 ? __pfx_set_enabled_sync+0x10/0x10 [蓝牙] hci_cmd_sync_work+0x137/0x220 [蓝牙] process_one_work+0x526/0x9d0 ? __pfx_process_one_work+0x10/0x10 ?
    __pfx_do_raw_spin_lock+0x10/0x10 ? mark_held_locks+0x1a/0x90 worker_thread+0x92/0x630 ?
    __pfx_worker_thread+0x10/0x10 kthread+0x196/0x1e0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 </TASK> 按任务分配 1782kasan_save_stack+0x33/0x60 kasan_set_track+0x25/0x30
    __kasan_kmalloc+0x8f/0xa0 hci_conn_add+0xa5/0xa80 [蓝牙] hci_bind_cis+0x881/0x9b0 [蓝牙] iso_connect_cis+0x121/0x520 [蓝牙] iso_sock_connect+0x3f6/0x790 [蓝牙] __sys_connect+0x109/0x1309
    __x64_sys_connect+0x40/0x50 do_syscall_64+0x60/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 由任务 695 释放kasan_save_stack+0x33/0x60 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50
    __kasan_slab_free+0x10a/0x180 __kmem_cache_free+0x14d/0x2e0 device_release+0x5d/0xf0 kobject_put+0xdf/0x270 hci_disconn_complete_evt+0x274/0x3a0 [bluetooth] hci_event_packet+0x579/0x7e0 [bluetooth] hci_rx_work+0x287/0xaa0 [bluetooth] process_one_work+0x526/0x9d0 worker_thread +0x92/0x630 kthread+0x196/0x1e0 ret_from_fork+0x2c/0x50 ==================================== ============================== (CVE-2023-53762)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2023-53762

high Nessus 插件 ID 277724

版本 1.14