{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-52903",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: lock overflowing for IOPOLL\n\nsyzbot reports an issue with overflow filling for IOPOLL:\n\nWARNING: CPU: 0 PID: 28 at io_uring/io_uring.c:734 io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734\nCPU: 0 PID: 28 Comm: kworker/u4:1 Not tainted 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0\nWorkqueue: events_unbound io_ring_exit_work\nCall trace:\n\u00a0io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734\n\u00a0io_req_cqe_overflow+0x5c/0x70 io_uring/io_uring.c:773\n\u00a0io_fill_cqe_req io_uring/io_uring.h:168 [inline]\n\u00a0io_do_iopoll+0x474/0x62c io_uring/rw.c:1065\n\u00a0io_iopoll_try_reap_events+0x6c/0x108 io_uring/io_uring.c:1513\n\u00a0io_uring_try_cancel_requests+0x13c/0x258 io_uring/io_uring.c:3056\n\u00a0io_ring_exit_work+0xec/0x390 io_uring/io_uring.c:2869\n\u00a0process_one_work+0x2d8/0x504 kernel/workqueue.c:2289\n\u00a0worker_thread+0x340/0x610 kernel/workqueue.c:2436\n\u00a0kthread+0x12c/0x158 kernel/kthread.c:376\n\u00a0ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863\n\nThere is no real problem for normal IOPOLL as flush is also called with\nuring_lock taken, but it's getting more complicated for IOPOLL|SQPOLL,\nfor which __io_cqring_overflow_flush() happens from the CQ waiting path."
            }
        ]
    },
    "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": "1da177e4c3f4",
                                            "version_value": "de77faee2801"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.10.165",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.89",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.7",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.2",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4"
            },
            {
                "url": "https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845"
            },
            {
                "url": "https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41b"
            },
            {
                "url": "https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7"
            }
        ]
    },
    "generator": {
        "engine": "bippy-c9c4e1df01b2"
    }
}