CVE - CVE-2021-47516

CVE-ID
CVE-2021-47516	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: nfp: Fix memory leak in nfp_cpp_area_cache_add() In line 800 (#1), nfp_cpp_area_alloc() allocates and initializes a CPP area structure. But in line 807 (#2), when the cache is allocated failed, this CPP area structure is not freed, which will result in memory leak. We can fix it by freeing the CPP area when the cache is allocated failed (#2). 792 int nfp_cpp_area_cache_add(struct nfp_cpp cpp, size_t size) 793 { 794 struct nfp_cpp_area_cache cache; 795 struct nfp_cpp_area area; 800 area = nfp_cpp_area_alloc(cpp, NFP_CPP_ID(7, NFP_CPP_ACTION_RW, 0), 801 0, size); // #1: allocates and initializes 802 if (!area) 803 return -ENOMEM; 805 cache = kzalloc(sizeof(cache), GFP_KERNEL); 806 if (!cache) 807 return -ENOMEM; // #2: missing free 817 return 0; 818 }
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77a URL:https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77a MISC:https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2 URL:https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2 MISC:https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1 URL:https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1 MISC:https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833de URL:https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833de MISC:https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7 URL:https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7 MISC:https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0 URL:https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0
Assigning CNA
kernel.org
Date Record Created
20240524	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240524)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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