CVE-2025-38427— 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screen_info模块未正确重定位PCI桥后的帧缓冲区，可能导致无效内存访问。
可能的 ATT&CK 技术 1 AI
T1083 · File and Directory Discovery影响版本矩阵 11
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | a168da3182f8727b338509cb413147aa29012d6f< cc3cc41ed67054a03134bea42408c720eec0fa04 |
affected |
78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371< 5c70e3ad85d2890d8af375333699429de26327f2 |
affected | ||
78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371< aeda386d86d79269a08f470dbdc53d13a91e51fa |
affected | ||
78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371< 2f29b5c231011b94007d2c8a6d793992f2275db1 |
affected | ||
6.6.45< 6.6.95 |
affected | ||
6.9 |
affected | ||
< 6.9 |
unaffected | ||
6.6.95≤ 6.6.* |
unaffected | ||
| … +3 条更多 | |||
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一、 漏洞 CVE-2025-38427 基础信息
漏洞信息
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Vulnerability Title
video: screen_info: Relocate framebuffers behind PCI bridges
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
video: screen_info: Relocate framebuffers behind PCI bridges
Apply PCI host-bridge window offsets to screen_info framebuffers. Fixes
invalid access to I/O memory.
Resources behind a PCI host bridge can be relocated by a certain offset
in the kernel's CPU address range used for I/O. The framebuffer memory
range stored in screen_info refers to the CPU addresses as seen during
boot (where the offset is 0). During boot up, firmware may assign a
different memory offset to the PCI host bridge and thereby relocating
the framebuffer address of the PCI graphics device as seen by the kernel.
The information in screen_info must be updated as well.
The helper pcibios_bus_to_resource() performs the relocation of the
screen_info's framebuffer resource (given in PCI bus addresses). The
result matches the I/O-memory resource of the PCI graphics device (given
in CPU addresses). As before, we store away the information necessary to
later update the information in screen_info itself.
Commit 78aa89d1dfba ("firmware/sysfb: Update screen_info for relocated
EFI framebuffers") added the code for updating screen_info. It is based
on similar functionality that pre-existed in efifb. Efifb uses a pointer
to the PCI resource, while the newer code does a memcpy of the region.
Hence efifb sees any updates to the PCI resource and avoids the issue.
v3:
- Only use struct pci_bus_region for PCI bus addresses (Bjorn)
- Clarify address semantics in commit messages and comments (Bjorn)
v2:
- Fixed tags (Takashi, Ivan)
- Updated information on efifb
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screen_info模块未正确重定位PCI桥后的帧缓冲区，可能导致无效内存访问。
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-2025-38427 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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同批安全公告 · Linux · 2025-07-25 · 共 114 条
| CVE-2025-38429 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38411 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38430 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38439 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38365 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38437 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38377 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38367 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38395 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38375 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38434 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38398 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38449 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38382 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38412 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38447 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38440 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38408 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38422 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38396 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 114 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-38427
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