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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47516 Detail

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 }


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77a Patch 
https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2 Patch 
https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1 Patch 
https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833de Patch 
https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7 Patch 
https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-401 Missing Release of Memory after Effective Lifetime cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47516
NVD Published Date:
05/24/2024
NVD Last Modified:
06/10/2024
Source:
kernel.org