{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50005",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.388Z",
        "datePublished": "2025-06-18T11:01:10.610Z",
        "dateUpdated": "2026-05-11T19:10:53.002Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:10:53.002Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout\n\nWhen the pn532 uart device is detaching, the pn532_uart_remove()\nis called. But there are no functions in pn532_uart_remove() that\ncould delete the cmd_timeout timer, which will cause use-after-free\nbugs. The process is shown below:\n\n    (thread 1)                  |        (thread 2)\n                                |  pn532_uart_send_frame\npn532_uart_remove               |    mod_timer(&pn532->cmd_timeout,...)\n  ...                           |    (wait a time)\n  kfree(pn532) //FREE           |    pn532_cmd_timeout\n                                |      pn532_uart_send_frame\n                                |        pn532->... //USE\n\nThis patch adds del_timer_sync() in pn532_uart_remove() in order to\nprevent the use-after-free bugs. What's more, the pn53x_unregister_nfc()\nis well synchronized, it sets nfc_dev->shutting_down to true and there\nare no syscalls could restart the cmd_timeout timer."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nfc/pn533/uart.c"
                    ],
                    "versions": [
                        {
                            "version": "c656aa4c27b17a8c70da223ed5ab42145800d6b5",
                            "lessThan": "50403ee6daddf0d7a14e9d3b51a377c39a08ec8c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c656aa4c27b17a8c70da223ed5ab42145800d6b5",
                            "lessThan": "9c34c33893db7a80d0e4b55c23d3b65e29609cfb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c656aa4c27b17a8c70da223ed5ab42145800d6b5",
                            "lessThan": "2c71f5d55a86fd5969428abf525c1ae6b1c7b0f5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c656aa4c27b17a8c70da223ed5ab42145800d6b5",
                            "lessThan": "f1e941dbf80a9b8bab0bffbc4cbe41cc7f4c6fb6",
                            "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/nfc/pn533/uart.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.140",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.64",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.6",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0",
                            "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": "5.5",
                                    "versionEndExcluding": "5.10.140"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.15.64"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/50403ee6daddf0d7a14e9d3b51a377c39a08ec8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9c34c33893db7a80d0e4b55c23d3b65e29609cfb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2c71f5d55a86fd5969428abf525c1ae6b1c7b0f5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f1e941dbf80a9b8bab0bffbc4cbe41cc7f4c6fb6"
                }
            ],
            "title": "nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout",
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                "engine": "bippy-1.2.0"
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        }
    }
}