{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45975",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.090Z",
        "datePublished": "2026-05-27T12:18:33.939Z",
        "dateUpdated": "2026-05-27T12:18:33.939Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-27T12:18:33.939Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd\n\nstruct ublksrv_ctrl_cmd is part of the io_uring_sqe, which may lie in\nuserspace-mapped memory. It's racy to access its fields with normal\nloads, as userspace may write to them concurrently. Use READ_ONCE() to\ncopy the ublksrv_ctrl_cmd from the io_uring_sqe to the stack. Use the\nlocal copy in place of the one in the io_uring_sqe."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/block/ublk_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "87213b0d847cd300285b5545598e0548baeb5208",
                            "lessThan": "ce63eda3e6d36e2c253febee1c8421ecbd1a680e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "87213b0d847cd300285b5545598e0548baeb5208",
                            "lessThan": "ed9f54cc1e335096733aed03c2a46de3d58922ed",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/block/ublk_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "6.19.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed"
                }
            ],
            "title": "ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}