{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53840",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-09T01:27:17.826Z",
        "datePublished": "2025-12-09T01:29:56.848Z",
        "dateUpdated": "2026-05-11T19:52:32.046Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:52:32.046Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: early: xhci-dbc: Fix a potential out-of-bound memory access\n\nIf xdbc_bulk_write() fails, the values in 'buf' can be anything. So the\nstring is not guaranteed to be NULL terminated when xdbc_trace() is called.\n\nReserve an extra byte, which will be zeroed automatically because 'buf' is\na static variable, in order to avoid troubles, should it happen."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/early/xhci-dbc.c"
                    ],
                    "versions": [
                        {
                            "version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
                            "lessThan": "e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
                            "lessThan": "351c8d8650d1ccc006255fa01f98b6c6496a02e5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
                            "lessThan": "df7c8aba7309f4dc55df94e06b67f576c0f52406",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
                            "lessThan": "a4a97ab3db5c081eb6e7dba91306adefb461e0bd",
                            "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/usb/early/xhci-dbc.c"
                    ],
                    "versions": [
                        {
                            "version": "4.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.99",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.16",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2.3",
                            "lessThanOrEqual": "6.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.3",
                            "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": "4.12",
                                    "versionEndExcluding": "5.15.99"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "6.1.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "6.2.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.12",
                                    "versionEndExcluding": "6.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/351c8d8650d1ccc006255fa01f98b6c6496a02e5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df7c8aba7309f4dc55df94e06b67f576c0f52406"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4a97ab3db5c081eb6e7dba91306adefb461e0bd"
                }
            ],
            "title": "usb: early: xhci-dbc: Fix a potential out-of-bound memory access",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}