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CVE-2026-68456— Linux kernel 安全漏洞

一分钟漏洞结论

影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 2.6.16版本存在安全漏洞，该漏洞源于ueagle-atm驱动在探测时使用异步固件加载但未在断开时等待其完成，设备拔出时可能导致固件加载与设备拆卸并发，触发kernfs异常。

AI 预测 5.5 利用难度: 中等 EPSS 0.18% · P7

影响版本矩阵 18

厂商产品 版本范围状态
Linux Linux b72458a80c75cab832248f536412f386e20a93a0< d85f19aaef42a03e3e4765d659c761c8750a7f23 affected
b72458a80c75cab832248f536412f386e20a93a0< 76861031b43a18065d13f9ffb8595d25c7576005 affected
b72458a80c75cab832248f536412f386e20a93a0< bbfedc84714064ea4845e6b76f96316eb5bb65d8 affected
b72458a80c75cab832248f536412f386e20a93a0< f2a6abc670104fc3e383ee3b1cf35c070485e3df affected
b72458a80c75cab832248f536412f386e20a93a0< c581e30ae5b332d8acef64475a211b3f82099941 affected
b72458a80c75cab832248f536412f386e20a93a0< 509b51327320bdeaef1969248177a446ded073ab affected
b72458a80c75cab832248f536412f386e20a93a0< ddcdac47e1f2651c7be60e299f98faf981522797 affected
b72458a80c75cab832248f536412f386e20a93a0< e2674dfbed8a30d57e2bc872c4bfa6c3eec918bf affected
… +10 条更多
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一、 漏洞 CVE-2026-68456 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
usb: atm: ueagle-atm: wait for pre-firmware load in .disconnect()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: atm: ueagle-atm: wait for pre-firmware load in .disconnect() ueagle-atm uses the asynchronous request_firmware_nowait() in .probe(), but does not wait for its completion, not even in .disconnect(); so, if the device is unplugged meanwhile, its teardown runs concurrently with that. Even though this inconsistency is worth addressing on its own, it has also triggered several bug reports in syzbot over the years (some auto-closed) where the firmware sysfs fallback mechanism (CONFIG_FW_LOADER_USER_HELPER) creates a firmware subdirectory in the device directory during its removal, which might hit unexpected conditions in kernfs, apparently, depending at which point the add and remove operations raced. (See links.) The pattern is: usb ?-?: Direct firmware load for ueagle-atm/eagle?.fw failed with error -2 usb ?-?: Falling back to sysfs fallback for: ueagle-atm/eagle?.fw <ERROR> Call trace: ... kernfs_create_dir_ns sysfs_create_dir_ns create_dir kobject_add_internal kobject_add_varg kobject_add class_dir_create_and_add get_device_parent device_add fw_load_sysfs_fallback fw_load_from_user_helper firmware_fallback_sysfs _request_firmware request_firmware_work_func ... (Some variations are observed, after fw_load_sysfs_fallback(), e.g., [1].) While the kernfs side is being looked at, the ueagle-atm side can be fixed by waiting for the pre-firmware load in the .disconnect() handler. This change has a similar approach to previous work by Andrey Tsygunka [2] (wait_for_completion() in .disconnect()), but it is relatively different in design/implementation; using the Originally-by tag for credit assignment. This has been tested with: - synthetic reproducer to check the error path; - USB gadget (virtual device) to check the firmware upload path; - QEMU device emulator to check the device ID re-enumeration path; (The latter two were written by Claude; no other code/text in this commit.) Links (year first reported): 2025 https://syzbot.org/bug?extid=ce1e5a1b4e086b43e56d 2025 https://syzbot.org/bug?extid=9af8471255ac36e34fd4 2024 https://syzbot.org/bug?extid=306212936b13e520679d 2023 https://syzkaller.appspot.com/bug?extid=457452d30bcdda75ead2 2022 https://syzbot.org/bug?extid=782984d6f1701b526edb 2021 https://syzbot.org/bug?id=f3f221579f4ef7e9691281f3c6f56c05f83e8490 2021 https://syzbot.org/bug?id=84d86f0d71394829df6fc53daf6642c045983881 2021 https://syzbot.org/bug?id=3302dc1c0e2b9c94f2e8edb404eabc9267bc6f90 [1] https://syzkaller.appspot.com/bug?extid=457452d30bcdda75ead2 [2] https://lore.kernel.org/lkml/20250410093146.3776801-2-aitsygunka@yandex.ru/
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基金会开源的一个操作系统内核。 Linux kernel 2.6.16版本存在安全漏洞，该漏洞源于ueagle-atm驱动在探测时使用异步固件加载但未在断开时等待其完成，设备拔出时可能导致固件加载与设备拆卸并发，触发kernfs异常。
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
Linux Linux b72458a80c75cab832248f536412f386e20a93a0 ~ d85f19aaef42a03e3e4765d659c761c8750a7f23 -
Linux Linux 2.6.16 -

二、漏洞 CVE-2026-68456 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2026-68456 的情报信息

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CVE-2026-68456 补丁与修复 (8)

同批安全公告 · Linux · 2026-08-15 · 共 845 条

CVE-2026-72421 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-74279 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-72408 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-72407 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-74475 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-74280 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-74309 10.0 CRITICAL Linux kernel 安全漏洞
CVE-2026-72493 9.9 CRITICAL Linux kernel 安全漏洞
CVE-2026-72207 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-74401 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-74398 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72191 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72192 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72194 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72199 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72200 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72217 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72210 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-74384 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2026-72211 9.8 CRITICAL Linux kernel 安全漏洞

显示前 20 条，共 845 条。 查看全部 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68456

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