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    "cveMetadata": {
        "cveId": "CVE-2023-52503",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-20T12:30:33.313Z",
        "datePublished": "2024-03-02T21:52:17.854Z",
        "dateUpdated": "2024-08-08T18:34:37.754Z"
    },
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                "dateUpdated": "2024-05-29T05:13:01.404Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tee/amdtee/core.c"
                    ],
                    "versions": [
                        {
                            "version": "757cc3e9ff1d",
                            "lessThan": "da7ce52a2f6c",
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                    "vendor": "Linux",
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
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                            "version": "5.6",
                            "status": "affected"
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                        {
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                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.199",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
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                        },
                        {
                            "version": "5.15.136",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
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                        },
                        {
                            "version": "6.1.59",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
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                        },
                        {
                            "version": "6.5.8",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.6",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
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                    ]
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27"
                },
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                    "url": "https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116"
                },
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                },
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                    "url": "https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f"
                }
            ],
            "title": "tee: amdtee: fix use-after-free vulnerability in amdtee_close_session",
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