{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47081",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhabanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory\n\nOur code analyzer reported a uaf.\n\nIn gaudi_memset_device_memory, cb is get via hl_cb_kernel_create()\nwith 2 refcount.\nIf hl_cs_allocate_job() failed, the execution runs into release_cb\nbranch. One ref of cb is dropped by hl_cb_put(cb) and could be freed\nif other thread also drops one ref. Then cb is used by cb->id later,\nwhich is a potential uaf.\n\nMy patch add a variable 'id' to accept the value of cb->id before the\nhl_cb_put(cb) is called, to avoid the potential uaf."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "423815bf02e2",
                                            "version_value": "b49f5af30b0e"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.12",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.12",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.12.7",
                                                        "lessThanOrEqual": "5.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.13",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/b49f5af30b0e4064fbd91e83823a4bfcb2c7a3e7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b49f5af30b0e4064fbd91e83823a4bfcb2c7a3e7"
            },
            {
                "url": "https://git.kernel.org/stable/c/115726c5d312b462c9d9931ea42becdfa838a076",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/115726c5d312b462c9d9931ea42becdfa838a076"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
    }
}