{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2021-44879",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "dateUpdated": "2026-10-14T11:58:24.553Z",
        "dateReserved": "2021-12-13T00:00:00.000Z",
        "datePublished": "2022-02-13T00:00:00.000Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2024-01-11T21:06:29.625Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference."
                }
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "n/a",
                    "versions": [
                        {
                            "version": "n/a",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3"
                },
                {
                    "url": "https://bugzilla.kernel.org/show_bug.cgi?id=215231"
                },
                {
                    "url": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/"
                },
                {
                    "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f"
                },
                {
                    "name": "[debian-lts-announce] 20240111 [SECURITY] [DLA 3710-1] linux security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
                },
                {
                    "name": "[debian-lts-announce] 20240111 [SECURITY] [DLA 3711-1] linux-5.10 security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "text",
                            "lang": "en",
                            "description": "n/a"
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T04:32:13.259Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://bugzilla.kernel.org/show_bug.cgi?id=215231",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "[debian-lts-announce] 20240111 [SECURITY] [DLA 3710-1] linux security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
                    },
                    {
                        "name": "[debian-lts-announce] 20240111 [SECURITY] [DLA 3711-1] linux-5.10 security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
                    }
                ]
            },
            {
                "x_adpType": "supplier",
                "providerMetadata": {
                    "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
                    "shortName": "siemens-SADP",
                    "dateUpdated": "2026-10-14T11:58:24.553Z"
                },
                "affected": [
                    {
                        "vendor": "Siemens",
                        "product": "RUGGEDCOM RST2428P",
                        "versions": [
                            {
                                "status": "unaffected",
                                "version": "0",
                                "lessThan": "*",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
                        "versions": [
                            {
                                "status": "unaffected",
                                "version": "0",
                                "lessThan": "*",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
                        "versions": [
                            {
                                "status": "unaffected",
                                "version": "0",
                                "lessThan": "*",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "V3.1.0",
                                "lessThan": "V3.1.5",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "V3.1.0",
                                "lessThan": "V3.1.5",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "V3.1.0",
                                "lessThan": "V3.1.5",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "V3.1.0",
                                "lessThan": "V3.1.5",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "0",
                                "lessThan": "V1.1",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    },
                    {
                        "vendor": "Siemens",
                        "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "V3.1.0",
                                "lessThan": "V3.1.5",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    }
                ],
                "references": [
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-831302.html"
                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
                    }
                ]
            }
        ]
    }
}