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I. Basic Information for CVE-2025-21671
Vulnerability Information

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Vulnerability Title
zram: fix potential UAF of zram table
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: zram: fix potential UAF of zram table If zram_meta_alloc failed early, it frees allocated zram->table without setting it NULL. Which will potentially cause zram_meta_free to access the table if user reset an failed and uninitialized device.
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 资源管理错误漏洞
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存在资源管理错误漏洞,该漏洞源于zram_meta_alloc函数在分配失败时未将zram->table设置为NULL,可能导致在设备未正确初始化时访问已释放的内存。
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 ac3b5366b9b7c9d97b606532ceab43d2329a22f3 ~ fe3de867f94819ba0f28e035c0b0182150147d95 -
LinuxLinux 6.1.122 ~ 6.1.127 -
II. Public POCs for CVE-2025-21671
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III. Intelligence Information for CVE-2025-21671
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IV. Related Vulnerabilities
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