{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2022-39293",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "dateUpdated": "2025-04-23T16:50:26.653Z",
        "dateReserved": "2022-09-02T00:00:00.000Z",
        "datePublished": "2022-10-13T00:00:00.000Z"
    },
    "containers": {
        "cna": {
            "title": "Azure RTOS USBX Host PIMA vulnerable to read integer underflow with buffer overflow",
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2022-10-13T00:00:00.000Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Azure RTOS USBX is a high-performance USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. The case is, in [_ux_host_class_pima_read](https://github.com/azure-rtos/usbx/blob/master/common/usbx_host_classes/src/ux_host_class_pima_read.c), there is data length from device response, returned in the very first packet, and read by [L165 code](https://github.com/azure-rtos/usbx/blob/082fd9db09a3669eca3358f10b8837a5c1635c0b/common/usbx_host_classes/src/ux_host_class_pima_read.c#L165), as header_length. Then in [L178 code](https://github.com/azure-rtos/usbx/blob/082fd9db09a3669eca3358f10b8837a5c1635c0b/common/usbx_host_classes/src/ux_host_class_pima_read.c#L178), there is a “if” branch, which check the expression of “(header_length - UX_HOST_CLASS_PIMA_DATA_HEADER_SIZE) > data_length” where if header_length is smaller than UX_HOST_CLASS_PIMA_DATA_HEADER_SIZE, calculation could overflow and then [L182 code](https://github.com/azure-rtos/usbx/blob/082fd9db09a3669eca3358f10b8837a5c1635c0b/common/usbx_host_classes/src/ux_host_class_pima_read.c#L182) the calculation of data_length is also overflow, this way the later [while loop start from L192](https://github.com/azure-rtos/usbx/blob/082fd9db09a3669eca3358f10b8837a5c1635c0b/common/usbx_host_classes/src/ux_host_class_pima_read.c#L192) can move data_pointer to unexpected address and cause write buffer overflow. The fix has been included in USBX release [6.1.12](https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel). The following can be used as a workaround: Add check of `header_length`: 1. It must be greater than `UX_HOST_CLASS_PIMA_DATA_HEADER_SIZE`. 1. It should be greater or equal to the current returned data length (`transfer_request -> ux_transfer_request_actual_length`)."
                }
            ],
            "affected": [
                {
                    "vendor": "azure-rtos",
                    "product": "usbx",
                    "versions": [
                        {
                            "version": "< 6.1.12",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel"
                },
                {
                    "url": "https://github.com/azure-rtos/usbx/security/advisories/GHSA-gg76-h537-xq48"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
                            "cweId": "CWE-191"
                        }
                    ]
                }
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            "source": {
                "advisory": "GHSA-gg76-h537-xq48",
                "discovery": "UNKNOWN"
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        },
        "adp": [
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T12:00:43.793Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://github.com/azure-rtos/usbx/security/advisories/GHSA-gg76-h537-xq48",
                        "tags": [
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                ]
            },
            {
                "metrics": [
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                            "content": {
                                "timestamp": "2025-04-23T15:49:58.111178Z",
                                "id": "CVE-2022-39293",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
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                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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