CVE-2024-50100— 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模块中，dummy-hcd驱动程序使用hrtimers代替常规计时器后，由于timer_pending和hrtimer_active API使用不当，导致任务挂起问题。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 8ffba8d917f44a8acbfccbdec331204353ac8ac8< cf7ee2291da551fc4b109fda1f6a332cb8212065 |
affected |
4a4cb56556124027f4846ff30849c0ede981aa92< 7d85884576a3be3616c260fc1fa862a59579d1ab |
affected | ||
a7f3813e589fd8e2834720829a47b5eb914a9afe< f828205ee3e4ddc712a13fba6c9902d51e91ddaf |
affected | ||
a7f3813e589fd8e2834720829a47b5eb914a9afe< 5189df7b8088268012882c220d6aca4e64981348 |
affected | ||
6.10 |
affected | ||
< 6.10 |
unaffected | ||
6.11.5≤ 6.11.* |
unaffected | ||
6.12≤ * |
unaffected |
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一、 漏洞 CVE-2024-50100 基础信息
漏洞信息
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Vulnerability Title
USB: gadget: dummy-hcd: Fix "task hung" problem
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
USB: gadget: dummy-hcd: Fix "task hung" problem
The syzbot fuzzer has been encountering "task hung" problems ever
since the dummy-hcd driver was changed to use hrtimers instead of
regular timers. It turns out that the problems are caused by a subtle
difference between the timer_pending() and hrtimer_active() APIs.
The changeover blindly replaced the first by the second. However,
timer_pending() returns True when the timer is queued but not when its
callback is running, whereas hrtimer_active() returns True when the
hrtimer is queued _or_ its callback is running. This difference
occasionally caused dummy_urb_enqueue() to think that the callback
routine had not yet started when in fact it was almost finished. As a
result the hrtimer was not restarted, which made it impossible for the
driver to dequeue later the URB that was just enqueued. This caused
usb_kill_urb() to hang, and things got worse from there.
Since hrtimers have no API for telling when they are queued and the
callback isn't running, the driver must keep track of this for itself.
That's what this patch does, adding a new "timer_pending" flag and
setting or clearing it at the appropriate times.
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模块中，dummy-hcd驱动程序使用hrtimers代替常规计时器后，由于timer_pending和hrtimer_active API使用不当，导致任务挂起问题。
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-2024-50100 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2024-11-05 · 共 50 条
| CVE-2024-50106 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50113 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50115 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50125 | 8.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50124 | 8.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50132 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50101 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50091 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52920 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50114 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50127 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50126 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50128 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50130 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50090 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50094 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50095 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50099 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50096 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50131 | 7.3 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 50 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-50100
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