CVE-2025-39726— 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，该漏洞源于并发管理不当，可能导致设备进入错误状态。
可能的 ATT&CK 技术 1 AI
T1211 · Exploitation for Stealth影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 684b89bc39ce4f204b1a2b180f39f2eb36a6b695< faf44487dfc80817f178dc8de7a0b73f960d019b |
affected |
684b89bc39ce4f204b1a2b180f39f2eb36a6b695< 1194ad0d44d66b273a02a3a22882dc863a68d764 |
affected | ||
684b89bc39ce4f204b1a2b180f39f2eb36a6b695< fafaa4982bedb5532f5952000f714a3e63023f40 |
affected | ||
684b89bc39ce4f204b1a2b180f39f2eb36a6b695< 897e8601b9cff1d054cdd53047f568b0e1995726 |
affected | ||
4.19 |
affected | ||
< 4.19 |
unaffected | ||
6.6.101≤ 6.6.* |
unaffected | ||
6.12.41≤ 6.12.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2025-39726 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
s390/ism: fix concurrency management in ism_cmd()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
s390/ism: fix concurrency management in ism_cmd()
The s390x ISM device data sheet clearly states that only one
request-response sequence is allowable per ISM function at any point in
time. Unfortunately as of today the s390/ism driver in Linux does not
honor that requirement. This patch aims to rectify that.
This problem was discovered based on Aliaksei's bug report which states
that for certain workloads the ISM functions end up entering error state
(with PEC 2 as seen from the logs) after a while and as a consequence
connections handled by the respective function break, and for future
connection requests the ISM device is not considered -- given it is in a
dysfunctional state. During further debugging PEC 3A was observed as
well.
A kernel message like
[ 1211.244319] zpci: 061a:00:00.0: Event 0x2 reports an error for PCI function 0x61a
is a reliable indicator of the stated function entering error state
with PEC 2. Let me also point out that a kernel message like
[ 1211.244325] zpci: 061a:00:00.0: The ism driver bound to the device does not support error recovery
is a reliable indicator that the ISM function won't be auto-recovered
because the ISM driver currently lacks support for it.
On a technical level, without this synchronization, commands (inputs to
the FW) may be partially or fully overwritten (corrupted) by another CPU
trying to issue commands on the same function. There is hard evidence that
this can lead to DMB token values being used as DMB IOVAs, leading to
PEC 2 PCI events indicating invalid DMA. But this is only one of the
failure modes imaginable. In theory even completely losing one command
and executing another one twice and then trying to interpret the outputs
as if the command we intended to execute was actually executed and not
the other one is also possible. Frankly, I don't feel confident about
providing an exhaustive list of possible consequences.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/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，该漏洞源于并发管理不当，可能导致设备进入错误状态。
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-2025-39726 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 · 2025-09-05 · 共 60 条
| CVE-2025-38734 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39682 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38737 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39673 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39703 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39702 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39704 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39718 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39680 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39697 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39677 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39683 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39717 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39714 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39689 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39691 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39698 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39711 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39710 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39696 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 60 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-39726
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