{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90391",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.810Z",
        "datePublished": "2026-09-17T16:09:25.083Z",
        "dateUpdated": "2026-10-19T09:02:55.602Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:02:55.602Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib/test_hmm: fail dmirror_fault() when the mirrored mm is gone\n\ndmirror_fault() is called from the dmirror_read() and dmirror_write()\nretry loops after dmirror_do_read() or dmirror_do_write() finds a missing\ndevice page table entry.\n\nIf the mirrored mm has already exited, mmget_not_zero() fails.  The\ncurrent code returns 0 in that case, which tells the caller that faulting\nsucceeded even though no page was faulted and no device page table entry\nwas installed.  The caller then retries the same address, hits -ENOENT\nagain, and can loop forever without making progress.\n\nReturn -EFAULT instead, so the ioctl fails when the mirrored mm is no\nlonger faultable."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "lib/test_hmm.c"
                    ],
                    "versions": [
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "50606ced303782f8715e2d0b98ca374ea498fa29",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "541a67f21ab807c8dbc0ea88d5a2eb73b2618090",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "d8e64ffab01e032ae29159d27230ace8cf8bdc80",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "2636569ea7c19d9a40db4a1e8d0a027bdacf1569",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "701347e31aa607f3782403151a3125729d685275",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "a2074f86fc9653831e4fb7b711bb715db330f182",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2ef9f5a5cb37643ca5def3516c546457074b882",
                            "lessThan": "6a8024511ddf4877435c34fb3d6028aa8e590649",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "lib/test_hmm.c"
                    ],
                    "versions": [
                        {
                            "version": "5.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.8",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/50606ced303782f8715e2d0b98ca374ea498fa29"
                },
                {
                    "url": "https://git.kernel.org/stable/c/541a67f21ab807c8dbc0ea88d5a2eb73b2618090"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d8e64ffab01e032ae29159d27230ace8cf8bdc80"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2636569ea7c19d9a40db4a1e8d0a027bdacf1569"
                },
                {
                    "url": "https://git.kernel.org/stable/c/701347e31aa607f3782403151a3125729d685275"
                },
                {
                    "url": "https://git.kernel.org/stable/c/af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a2074f86fc9653831e4fb7b711bb715db330f182"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6a8024511ddf4877435c34fb3d6028aa8e590649"
                }
            ],
            "title": "lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}