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I. Basic Information for CVE-2025-21734
Vulnerability Information

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Vulnerability Title
misc: fastrpc: Fix copy buffer page size
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote subsystem. There is a problem with current implementation of page size calculation which is not considering the offset in the calculation. This might lead to passing of improper and out-of-bounds page size which could result in memory issue. Calculate page start and page end using the offset adjusted address instead of absolute address.
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fastrpc驱动在计算页面大小时未考虑偏移量,可能导致越界读取。
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 02b45b47fbe84e23699bb6bdc74d4c2780e282b4 ~ c56ba3ea8e3c9a69a992aad18f7a65e43e51d623 -
LinuxLinux 5.2 -
II. Public POCs for CVE-2025-21734
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III. Intelligence Information for CVE-2025-21734
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IV. Related Vulnerabilities
V. Comments for CVE-2025-21734

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