{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-52503",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: amdtee: fix use-after-free vulnerability in amdtee_close_session\n\nThere is a potential race condition in amdtee_close_session that may\ncause use-after-free in amdtee_open_session. For instance, if a session\nhas refcount == 1, and one thread tries to free this session via:\n\n    kref_put(&sess->refcount, destroy_session);\n\nthe reference count will get decremented, and the next step would be to\ncall destroy_session(). However, if in another thread,\namdtee_open_session() is called before destroy_session() has completed\nexecution, alloc_session() may return 'sess' that will be freed up\nlater in destroy_session() leading to use-after-free in\namdtee_open_session.\n\nTo fix this issue, treat decrement of sess->refcount and removal of\n'sess' from session list in destroy_session() as a critical section, so\nthat it is executed atomically."
            }
        ]
    },
    "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": "757cc3e9ff1d",
                                            "version_value": "da7ce52a2f6c"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.6",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.6",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.199",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.136",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.59",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.5.8",
                                                        "lessThanOrEqual": "6.5.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27"
            },
            {
                "url": "https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116"
            },
            {
                "url": "https://git.kernel.org/stable/c/60c3e7a00db954947c265b55099c21b216f2a05c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/60c3e7a00db954947c265b55099c21b216f2a05c"
            },
            {
                "url": "https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce"
            },
            {
                "url": "https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f"
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