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I. Basic Information for CVE-2025-21903
Vulnerability Information

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Vulnerability Title
mctp i3c: handle NULL header address
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mctp i3c: handle NULL header address daddr can be NULL if there is no neighbour table entry present, in that case the tx packet should be dropped. saddr will usually be set by MCTP core, but check for NULL in case a packet is transmitted by a different protocol.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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,该漏洞源于未检查MCTP I3C传输中的NULL地址。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
LinuxLinux c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 ~ d8be54c35aee29d96d1350b1b6f153be4da37c07 -
LinuxLinux 6.7 -
II. Public POCs for CVE-2025-21903
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III. Intelligence Information for CVE-2025-21903
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IV. Related Vulnerabilities
V. Comments for CVE-2025-21903

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