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CVE-2026-64453— Linux kernel 安全漏洞

AI 预测 5.5 利用难度: 中等 EPSS 0.17% · P7

可能的 ATT&CK 技术 1AI

T1055 · Process Injection

影响版本矩阵 8

厂商产品版本范围状态
LinuxLinux121a0f839dbb397af5fabb701cea3e9983223e50< c40090f8d19b415e2925b22be964b5d1f695666faffected
121a0f839dbb397af5fabb701cea3e9983223e50< 1947b6411460d68b54b13c536961933166937d05affected
121a0f839dbb397af5fabb701cea3e9983223e50< 0bfeec21984fedd32987f4e4c0cde34b445af404affected
6.18affected
< 6.18unaffected
6.18.39≤ 6.18.*unaffected
7.1.4≤ 7.1.*unaffected
7.2-rc3≤ *unaffected
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一、 漏洞 CVE-2026-64453 基础信息

漏洞信息

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Vulnerability Title
usb: misc: usbio: fix disconnect UAF in client teardown
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: misc: usbio: fix disconnect UAF in client teardown usbio_disconnect() walks usbio->cli_list in reverse and uninitializes each auxiliary device. auxiliary_device_uninit() drops the device reference, and for an unbound child that can run usbio_auxdev_release() and free the containing struct usbio_client. list_for_each_entry_reverse() advances after the loop body by reading client->link.prev. If the current client is freed by auxiliary_device_uninit(), the iterator dereferences freed memory. Use list_for_each_entry_safe_reverse() so the previous client is cached before the body can drop the final reference. This preserves reverse teardown order while keeping the next iterator cursor independent of the current client's lifetime. Validation reproduced this kernel report: BUG: KASAN: slab-use-after-free in usbio_disconnect+0x12e/0x150 Call Trace: <TASK> dump_stack_lvl+0x66/0xa0 print_report+0xce/0x630 ? usbio_disconnect+0x12e/0x150 ? srso_alias_return_thunk+0x5/0xfbef5 ? __virt_addr_valid+0x188/0x320 ? usbio_disconnect+0x12e/0x150 kasan_report+0xe0/0x110 ? usbio_disconnect+0x12e/0x150 usbio_disconnect+0x12e/0x150 usb_unbind_interface+0xf3/0x400 really_probe+0x316/0x660 __driver_probe_device+0x106/0x240 driver_probe_device+0x4a/0x110 __device_attach_driver+0xf1/0x1a0 ? __pfx___device_attach_driver+0x10/0x10 bus_for_each_drv+0xf9/0x160 ? __pfx_bus_for_each_drv+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? trace_hardirqs_on+0x18/0x130 ? srso_alias_return_thunk+0x5/0xfbef5 ? _raw_spin_unlock_irqrestore+0x44/0x60 __device_attach+0x133/0x2a0 ? __pfx___device_attach+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? do_raw_spin_unlock+0x9a/0x100 ? srso_alias_return_thunk+0x5/0xfbef5 device_initial_probe+0x55/0x70 bus_probe_device+0x4a/0xd0 device_add+0x9b9/0xc10 ? __pfx_device_add+0x10/0x10 ? _raw_spin_unlock_irqrestore+0x44/0x60 ? srso_alias_return_thunk+0x5/0xfbef5 ? lockdep_hardirqs_on_prepare+0xea/0x1a0 ? srso_alias_return_thunk+0x5/0xfbef5 ? usb_enable_lpm+0x3c/0x260 usb_set_configuration+0xb64/0xf20 usb_generic_driver_probe+0x5f/0x90 usb_probe_device+0x71/0x1b0 really_probe+0x46b/0x660 __driver_probe_device+0x106/0x240 driver_probe_device+0x4a/0x110 __device_attach_driver+0xf1/0x1a0 ? __pfx___device_attach_driver+0x10/0x10 bus_for_each_drv+0xf9/0x160 ? __pfx_bus_for_each_drv+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? trace_hardirqs_on+0x18/0x130 ? srso_alias_return_thunk+0x5/0xfbef5 ? _raw_spin_unlock_irqrestore+0x44/0x60 __device_attach+0x133/0x2a0 ? __pfx___device_attach+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? do_raw_spin_unlock+0x9a/0x100 ? srso_alias_return_thunk+0x5/0xfbef5 device_initial_probe+0x55/0x70 bus_probe_device+0x4a/0xd0 device_add+0x9b9/0xc10 ? __pfx_device_add+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? add_device_randomness+0xb7/0xf0 usb_new_device+0x492/0x870 hub_event+0x1b10/0x29c0 ? __pfx_hub_event+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? lock_acquire+0x187/0x300 ? process_one_work+0x475/0xb90 ? srso_alias_return_thunk+0x5/0xfbef5 ? lock_release+0xc8/0x290 ? srso_alias_return_thunk+0x5/0xfbef5 process_one_work+0x4d7/0xb90 ? __pfx_process_one_work+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? srso_alias_return_thunk+0x5/0xfbef5 ? __list_add_valid_or_report+0x37/0xf0 ? __pfx_hub_event+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 worker_thread+0x2d8/0x570 ? __pfx_worker_thread+0x10/0x10 kthread+0x1ad/0x1f0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x3c9/0x540 ? __pfx_ret_from_fork+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? __switch_to+0x2e9/0x730 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK>
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞,该漏洞源于usbio驱动在客户端断开连接时,使用list_for_each_entry_reverse遍历客户端列表,若客户端被释放则导致释放后重用,可能造成系统崩溃。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商产品影响版本CPE订阅
LinuxLinux 121a0f839dbb397af5fabb701cea3e9983223e50 ~ c40090f8d19b415e2925b22be964b5d1f695666f -
LinuxLinux 6.18 -

二、漏洞 CVE-2026-64453 的公开POC

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三、漏洞 CVE-2026-64453 的情报信息

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CVE-2026-64453 补丁与修复 (3)

同批安全公告 · Linux · 2026-07-25 · 共 274 条

CVE-2026-643559.8 CRITICALLinux kernel 安全漏洞
CVE-2026-644599.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643039.8 CRITICALLinux kernel 安全漏洞
CVE-2026-644399.8 CRITICALLinux kernel 安全漏洞
CVE-2026-644109.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643999.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643979.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643919.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643879.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643869.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643859.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643839.8 CRITICALLinux kernel 安全漏洞
CVE-2026-643849.8 CRITICALLinux kernel 安全漏洞
CVE-2026-642689.8 CRITICALLinux kernel 安全漏洞
CVE-2026-645239.8 CRITICALLinux kernel 安全漏洞
CVE-2026-642699.1 CRITICALLinux kernel 安全漏洞
CVE-2026-642579.1 CRITICALLinux kernel 安全漏洞
CVE-2026-643199.1 CRITICALLinux kernel 安全漏洞
CVE-2026-643209.1 CRITICALLinux kernel 安全漏洞
CVE-2026-643939.1 CRITICALLinux kernel 安全漏洞

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IV. Related Vulnerabilities

V. Comments for CVE-2026-64453

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