CVE-2025-39790— 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，该漏洞源于未正确检测指向意外TRE的事件，可能导致缓冲区双重释放。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 7b3f0e3b60c27f4fcb69927d84987e5fd6240530 |
affected |
1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 4079c6c59705b96285219b9efc63cab870d757b7 |
affected | ||
1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 5e17429679a8545afe438ce7a82a13a54e8ceabb |
affected | ||
1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 2ec99b922f4661521927eeada76f431eebfbabc4 |
affected | ||
1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 44e1a079e18f78d6594a715b0c6d7e18c656f7b9 |
affected | ||
1d3173a3bae7039b765a0956e3e4bf846dbaacb8< 5bd398e20f0833ae8a1267d4f343591a2dd20185 |
affected | ||
5.7 |
affected | ||
< 5.7 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2025-39790 基础信息
漏洞信息
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Vulnerability Title
bus: mhi: host: Detect events pointing to unexpected TREs
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
bus: mhi: host: Detect events pointing to unexpected TREs
When a remote device sends a completion event to the host, it contains a
pointer to the consumed TRE. The host uses this pointer to process all of
the TREs between it and the host's local copy of the ring's read pointer.
This works when processing completion for chained transactions, but can
lead to nasty results if the device sends an event for a single-element
transaction with a read pointer that is multiple elements ahead of the
host's read pointer.
For instance, if the host accesses an event ring while the device is
updating it, the pointer inside of the event might still point to an old
TRE. If the host uses the channel's xfer_cb() to directly free the buffer
pointed to by the TRE, the buffer will be double-freed.
This behavior was observed on an ep that used upstream EP stack without
'commit 6f18d174b73d ("bus: mhi: ep: Update read pointer only after buffer
is written")'. Where the device updated the events ring pointer before
updating the event contents, so it left a window where the host was able to
access the stale data the event pointed to, before the device had the
chance to update them. The usual pattern was that the host received an
event pointing to a TRE that is not immediately after the last processed
one, so it got treated as if it was a chained transaction, processing all
of the TREs in between the two read pointers.
This commit aims to harden the host by ensuring transactions where the
event points to a TRE that isn't local_rp + 1 are chained.
[mani: added stable tag and reworded commit message]
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/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，该漏洞源于未正确检测指向意外TRE的事件，可能导致缓冲区双重释放。
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-2025-39790 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 · 2025-09-11 · 共 54 条
| CVE-2025-39758 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39761 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39750 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39787 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39786 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39791 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39740 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39785 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39780 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39779 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39770 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39738 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39789 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39776 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39766 | Linux kernel 安全漏洞 | |
| CVE-2025-39771 | Linux kernel 安全漏洞 | |
| CVE-2025-39768 | Linux kernel 安全漏洞 | |
| CVE-2025-39769 | Linux kernel 安全漏洞 | |
| CVE-2025-39772 | Linux kernel 安全漏洞 | |
| CVE-2025-39762 | Linux kernel 安全漏洞 |
显示前 20 条，共 54 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-39790
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