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I. Basic Information for CVE-2023-52976
Vulnerability Information

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Vulnerability Title
efi: fix potential NULL deref in efi_mem_reserve_persistent
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]
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efi组件在efi_mem_reserve_persistent函数中未检查memremap返回值,可能导致空指针取消引用。
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 18df7577adae6c6c778bf774b3aebcacbc1fb439 ~ d92a25627bcdf264183670da73c9a60c0bac327e -
LinuxLinux 5.2 -
II. Public POCs for CVE-2023-52976
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III. Intelligence Information for CVE-2023-52976
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IV. Related Vulnerabilities
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