{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-47671",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:16:05.753Z",
        "datePublished": "2025-04-17T18:01:31.459Z",
        "dateUpdated": "2026-05-11T13:58:56.813Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T13:58:56.813Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path\n\nIn es58x_rx_err_msg(), if can->do_set_mode() fails, the function\ndirectly returns without calling netif_rx(skb). This means that the\nskb previously allocated by alloc_can_err_skb() is not freed. In other\nterms, this is a memory leak.\n\nThis patch simply removes the return statement in the error branch and\nlet the function continue.\n\nIssue was found with GCC -fanalyzer, please follow the link below for\ndetails."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/usb/etas_es58x/es58x_core.c"
                    ],
                    "versions": [
                        {
                            "version": "8537257874e949a59c834cecfd5a063e11b64b0b",
                            "lessThan": "4f389e1276a5389c92cef860c9fde8e1c802a871",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8537257874e949a59c834cecfd5a063e11b64b0b",
                            "lessThan": "7eb0881aec26099089f12ae850aebd93190b1dfe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8537257874e949a59c834cecfd5a063e11b64b0b",
                            "lessThan": "d9447f768bc8c60623e4bb3ce65b8f4654d33a50",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/usb/etas_es58x/es58x_core.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.14.19",
                            "lessThanOrEqual": "5.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.3",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "5.14.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "5.15.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "5.16"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4f389e1276a5389c92cef860c9fde8e1c802a871"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7eb0881aec26099089f12ae850aebd93190b1dfe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d9447f768bc8c60623e4bb3ce65b8f4654d33a50"
                }
            ],
            "title": "can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-401",
                                "lang": "en",
                                "description": "CWE-401 Missing Release of Memory after Effective Lifetime"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 3.3,
                            "attackVector": "LOCAL",
                            "baseSeverity": "LOW",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "LOW",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-04-17T19:49:27.476298Z",
                                "id": "CVE-2021-47671",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-04-17T19:49:36.575Z"
                }
            }
        ]
    }
}