CVE-2026-46148— 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spi microchip-core-qspi中内置片选自动控制问题，可能导致访问其他设备时片选被错误拉低。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 8596124c4c1bc7561454cee0463c16eca70b5d25< 998f43196d732f20f9b71eb6ebd973736c9fa911 |
affected |
8596124c4c1bc7561454cee0463c16eca70b5d25< ee3c99aa102212ad59dc2c19595515c4a6729307 |
affected | ||
8596124c4c1bc7561454cee0463c16eca70b5d25< 7672749e1496215e8683ce57cf323119033954cf |
affected | ||
6.1 |
affected | ||
< 6.1 |
unaffected | ||
6.18.30≤ 6.18.* |
unaffected | ||
7.0.7≤ 7.0.* |
unaffected | ||
7.1≤ * |
unaffected |
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一、 漏洞 CVE-2026-46148 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
spi: microchip-core-qspi: control built-in cs manually
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
spi: microchip-core-qspi: control built-in cs manually
The coreQSPI IP supports only a single chip select, which is
automagically operated by the hardware - set low when the transmit
buffer first gets written to and set high when the number of bytes
written to the TOTALBYTES field of the FRAMES register have been sent on
the bus. Additional devices must use GPIOs for their chip selects.
It was reported to me that if there are two devices attached to this
QSPI controller that the in-built chip select is set low while linux
tries to access the device attached to the GPIO.
This went undetected as the boards that connected multiple devices to
the SPI controller all exclusively used GPIOs for chip selects, not
relying on the built-in chip select at all. It turns out that this was
because the built-in chip select, when controlled automagically, is set
low when active and high when inactive, thereby ruling out its use for
active-high devices or devices that need to transmit with the chip
select disabled.
Modify the driver so that it controls chip select directly, retaining
the behaviour for mem_ops of setting the chip select active for the
entire duration of the transfer in the exec_op callback. For regular
transfers, implement the set_cs callback for the core to use.
As part of this, the existing setup callback, mchp_coreqspi_setup_op(),
is removed. Modifying the CLKIDLE field is not safe to do during
operation when there are multiple devices, so this code is removed
entirely. Setting the MASTER and ENABLE fields is something that can be
done once at probe, it doesn't need to be re-run for each device.
Instead the new setup callback sets the built-in chip select to its
inactive state for active-low devices, as the reset value of the chip
select in software controlled mode is low.
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spi microchip-core-qspi中内置片选自动控制问题，可能导致访问其他设备时片选被错误拉低。
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-2026-46148 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-46148 补丁与修复 (3)
同批安全公告 · Linux · 2026-05-28 · 共 135 条
| CVE-2026-46195 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46135 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46137 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46115 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46155 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46185 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46119 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-46238 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46174 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46125 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46198 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46166 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46212 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46152 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46113 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46138 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46232 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46157 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46176 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-46215 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 135 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-46148
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