{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-53111",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nloop: Fix use-after-free issues\n\ndo_req_filebacked() calls blk_mq_complete_request() synchronously or\nasynchronously when using asynchronous I/O unless memory allocation fails.\nHence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor\n'rq' after do_req_filebacked() finished unless we are sure that the request\nhas not yet been completed. This patch fixes the following kernel crash:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000054\nCall trace:\n css_put.42938+0x1c/0x1ac\n loop_process_work+0xc8c/0xfd4\n loop_rootcg_workfn+0x24/0x34\n process_one_work+0x244/0x558\n worker_thread+0x400/0x8fc\n kthread+0x16c/0x1e0\n ret_from_fork+0x10/0x20"
            }
        ]
    },
    "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": "bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6",
                                            "version_value": "407badf73ec9fb0d5744bf2ca1745c1818aa222f"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.4",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "4.4",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.104",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.21",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.2.8",
                                                        "lessThanOrEqual": "6.2.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.3",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
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                }
            ]
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    "references": {
        "reference_data": [
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                "url": "https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f"
            },
            {
                "url": "https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada"
            },
            {
                "url": "https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c"
            },
            {
                "url": "https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec"
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