{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-47519",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-24T15:02:54.824Z",
        "datePublished": "2024-05-24T15:09:33.118Z",
        "dateUpdated": "2026-05-11T13:56:13.946Z"
    },
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            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: m_can: m_can_read_fifo: fix memory leak in error branch\n\nIn m_can_read_fifo(), if the second call to m_can_fifo_read() fails,\nthe function jump to the out_fail label and returns without calling\nm_can_receive_skb(). This means that the skb previously allocated by\nalloc_can_skb() is not freed. In other terms, this is a memory leak.\n\nThis patch adds a goto label to destroy the skb if an error occurs.\n\nIssue was found with GCC -fanalyzer, please follow the link below for\ndetails."
                }
            ],
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                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/m_can/m_can.c"
                    ],
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                            "version": "e39381770ec9ca3c51d8b9bd9cc6e01d78ea974a",
                            "lessThan": "75a422165477dd12d2d20aa7c9ee7c9a281c9908",
                            "status": "affected",
                            "versionType": "git"
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                            "version": "e39381770ec9ca3c51d8b9bd9cc6e01d78ea974a",
                            "lessThan": "31cb32a590d62b18f69a9a6d433f4e69c74fdd56",
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                    "programFiles": [
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                            "version": "5.15",
                            "status": "affected"
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                        {
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                            "status": "unaffected",
                            "versionType": "semver"
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                            "version": "5.15.8",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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                            "operator": "OR",
                            "negate": false,
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "5.15.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "5.16"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/75a422165477dd12d2d20aa7c9ee7c9a281c9908"
                },
                {
                    "url": "https://git.kernel.org/stable/c/31cb32a590d62b18f69a9a6d433f4e69c74fdd56"
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            ],
            "title": "can: m_can: m_can_read_fifo: fix memory leak in error branch",
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        },
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                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-401",
                                "lang": "en",
                                "description": "CWE-401 Missing Release of Memory after Effective Lifetime"
                            }
                        ]
                    }
                ],
                "affected": [
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                        "product": "linux_kernel",
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                            "baseSeverity": "HIGH",
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                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
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                            "content": {
                                "timestamp": "2024-06-05T16:07:08.194411Z",
                                "id": "CVE-2021-47519",
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                                        "Exploitation": "none"
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-06T19:59:00.023Z"
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:39:59.702Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/75a422165477dd12d2d20aa7c9ee7c9a281c9908",
                        "tags": [
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                    {
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