CVE-2024-36894— 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 usb:gadget:f_fs 模块存在竞争条件漏洞。
可能的 ATT&CK 技术 1 AI
T1055 · Process Injection影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 2e4c7553cd6f9c68bb741582dcb614edcbeca70f< f71a53148ce34898fef099b75386a3a9f4449311 |
affected |
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< 9e72ef59cbe61cd1243857a6418ca92104275867 |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< e500b1c4e29ad0bd1c1332a1eaea2913627a92dd |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< 3613e5023f09b3308545e9d1acda86017ebd418a |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< a0fdccb1c9e027e3195f947f61aa87d6d0d2ea14 |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< 73c05ad46bb4fbbdb346004651576d1c8dbcffbb |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< d7461830823242702f5d84084bcccb25159003f4 |
affected | ||
2e4c7553cd6f9c68bb741582dcb614edcbeca70f< 24729b307eefcd7c476065cd7351c1a018082c19 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2024-36894 基础信息
漏洞信息
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Vulnerability Title
usb: gadget: f_fs: Fix race between aio_cancel() and AIO request complete
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: f_fs: Fix race between aio_cancel() and AIO request complete
FFS based applications can utilize the aio_cancel() callback to dequeue
pending USB requests submitted to the UDC. There is a scenario where the
FFS application issues an AIO cancel call, while the UDC is handling a
soft disconnect. For a DWC3 based implementation, the callstack looks
like the following:
DWC3 Gadget FFS Application
dwc3_gadget_soft_disconnect() ...
--> dwc3_stop_active_transfers()
--> dwc3_gadget_giveback(-ESHUTDOWN)
--> ffs_epfile_async_io_complete() ffs_aio_cancel()
--> usb_ep_free_request() --> usb_ep_dequeue()
There is currently no locking implemented between the AIO completion
handler and AIO cancel, so the issue occurs if the completion routine is
running in parallel to an AIO cancel call coming from the FFS application.
As the completion call frees the USB request (io_data->req) the FFS
application is also referencing it for the usb_ep_dequeue() call. This can
lead to accessing a stale/hanging pointer.
commit b566d38857fc ("usb: gadget: f_fs: use io_data->status consistently")
relocated the usb_ep_free_request() into ffs_epfile_async_io_complete().
However, in order to properly implement locking to mitigate this issue, the
spinlock can't be added to ffs_epfile_async_io_complete(), as
usb_ep_dequeue() (if successfully dequeuing a USB request) will call the
function driver's completion handler in the same context. Hence, leading
into a deadlock.
Fix this issue by moving the usb_ep_free_request() back to
ffs_user_copy_worker(), and ensuring that it explicitly sets io_data->req
to NULL after freeing it within the ffs->eps_lock. This resolves the race
condition above, as the ffs_aio_cancel() routine will not continue
attempting to dequeue a request that has already been freed, or the
ffs_user_copy_work() not freeing the USB request until the AIO cancel is
done referencing it.
This fix depends on
commit b566d38857fc ("usb: gadget: f_fs: use io_data->status
consistently")
来源: 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
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 usb:gadget:f_fs 模块存在竞争条件漏洞。
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
二、漏洞 CVE-2024-36894 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-36894 其他参考 (7)
同批安全公告 · Linux · 2024-05-30 · 共 93 条
| CVE-2024-36958 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36886 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36911 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36912 | 9.6 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36913 | 9.3 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36909 | 9.3 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36922 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36921 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36910 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36032 | 8.1 HIGH | Linux kernel安全漏洞 |
| CVE-2024-36933 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36904 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36914 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36918 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36018 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36890 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36940 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36884 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36928 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36883 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 93 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-36894
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