{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47356",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-21T14:28:16.987Z",
        "datePublished": "2024-05-21T14:35:59.097Z",
        "dateUpdated": "2024-08-04T05:32:08.504Z"
    },
    "containers": {
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:06:32.920Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmISDN: fix possible use-after-free in HFC_cleanup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/isdn/hardware/mISDN/hfcpci.c"
                    ],
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                            "version": "1da177e4c3f4",
                            "lessThan": "49331c07ef0f",
                            "status": "affected",
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                            "version": "1da177e4c3f4",
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                            "status": "affected",
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                    "vendor": "Linux",
                    "defaultStatus": "affected",
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                        "drivers/isdn/hardware/mISDN/hfcpci.c"
                    ],
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                        },
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                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/49331c07ef0f8fdfa42b30ba6a83a657b29d7fbe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54ff3202928952a100c477248e65ac6db01258a7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7867ddc5f3de7f289aee63233afc0df4b62834c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5f2818185da0fe82a932f0856633038b66faf124"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3ecd228c636ee17c14662729737fa07242a93cb0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b7ee9ae1e0cf55a037c4a99af2acc5d78cb7802d"
                },
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                },
                {
                    "url": "https://git.kernel.org/stable/c/ed7c3739d0a07e2ec3ccbffe7e93cea01c438cda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/009fc857c5f6fda81f2f7dd851b2d54193a8e733"
                }
            ],
            "title": "mISDN: fix possible use-after-free in HFC_cleanup()",
            "x_generator": {
                "engine": "bippy-a5840b7849dd"
            }
        },
        "adp": [
            {
                "title": "CISA ADP Vulnrichment",
                "metrics": [
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                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.7,
                            "attackVector": "LOCAL",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2021-47356",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-05-28T18:08:17.352199Z"
                            }
                        }
                    }
                ],
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