cve-2021-47516
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-09-11 17:32
Severity
Summary
nfp: Fix memory leak in nfp_cpp_area_cache_add()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833dePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0Patch
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
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But in line 807 (#2), when the cache is allocated\\nfailed, this CPP area structure is not freed, which will result in\\nmemory leak.\\n\\nWe can fix it by freeing the CPP area when the cache is allocated\\nfailed (#2).\\n\\n792 int nfp_cpp_area_cache_add(struct nfp_cpp *cpp, size_t size)\\n793 {\\n794 \\tstruct nfp_cpp_area_cache *cache;\\n795 \\tstruct nfp_cpp_area *area;\\n\\n800\\tarea = nfp_cpp_area_alloc(cpp, NFP_CPP_ID(7, NFP_CPP_ACTION_RW, 0),\\n801 \\t\\t\\t\\t  0, size);\\n\\t// #1: allocates and initializes\\n\\n802 \\tif (!area)\\n803 \\t\\treturn -ENOMEM;\\n\\n805 \\tcache = kzalloc(sizeof(*cache), GFP_KERNEL);\\n806 \\tif (!cache)\\n807 \\t\\treturn -ENOMEM; // #2: missing free\\n\\n817\\treturn 0;\\n818 }\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nfp: corrige la p\u00e9rdida de memoria en nfp_cpp_area_cache_add() En la l\u00ednea 800 (#1), nfp_cpp_area_alloc() asigna e inicializa una estructura de \u00e1rea CPP. 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