CVE-2026-23287— 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，该漏洞源于中断亲和性设置问题，可能导致中断冻结。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | cc9f04f9a84f745949e325661550ed14bd0ff322< 8942fb1a5bc2dcbd88f7e656d109d42f778f298f |
affected |
cc9f04f9a84f745949e325661550ed14bd0ff322< 2edbd173309165d103be6c73bd83e459dc45ae7b |
affected | ||
cc9f04f9a84f745949e325661550ed14bd0ff322< 686eb378a4a51aa967e08337dd59daade16aec0f |
affected | ||
cc9f04f9a84f745949e325661550ed14bd0ff322< 1883332bf21feb8871af09daf604fc4836a76925 |
affected | ||
cc9f04f9a84f745949e325661550ed14bd0ff322< f611791a927141d05d7030607dea6372311c1413 |
affected | ||
cc9f04f9a84f745949e325661550ed14bd0ff322< 1072020685f4b81f6efad3b412cdae0bd62bb043 |
affected | ||
5.1 |
affected | ||
< 5.1 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2026-23287 基础信息
漏洞信息
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Vulnerability Title
irqchip/sifive-plic: Fix frozen interrupt due to affinity setting
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
irqchip/sifive-plic: Fix frozen interrupt due to affinity setting
PLIC ignores interrupt completion message for disabled interrupt, explained
by the specification:
The PLIC signals it has completed executing an interrupt handler by
writing the interrupt ID it received from the claim to the
claim/complete register. The PLIC does not check whether the completion
ID is the same as the last claim ID for that target. If the completion
ID does not match an interrupt source that is currently enabled for
the target, the completion is silently ignored.
This caused problems in the past, because an interrupt can be disabled
while still being handled and plic_irq_eoi() had no effect. That was fixed
by checking if the interrupt is disabled, and if so enable it, before
sending the completion message. That check is done with irqd_irq_disabled().
However, that is not sufficient because the enable bit for the handling
hart can be zero despite irqd_irq_disabled(d) being false. This can happen
when affinity setting is changed while a hart is still handling the
interrupt.
This problem is easily reproducible by dumping a large file to uart (which
generates lots of interrupts) and at the same time keep changing the uart
interrupt's affinity setting. The uart port becomes frozen almost
instantaneously.
Fix this by checking PLIC's enable bit instead of irqd_irq_disabled().
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，该漏洞源于中断亲和性设置问题，可能导致中断冻结。
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-2026-23287 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-23287 补丁与修复 (6)
同批安全公告 · Linux · 2026-03-25 · 共 116 条
| CVE-2026-23395 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31788 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23280 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23317 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23393 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23392 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23391 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23340 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23372 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23288 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23306 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23378 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23336 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23351 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23350 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23383 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23364 | 7.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23294 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-23358 | Linux kernel 安全漏洞 | |
| CVE-2026-23357 | Linux kernel 安全漏洞 |
显示前 20 条，共 116 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-23287
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