{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93081",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T15:57:05.662Z",
        "datePublished": "2026-09-17T16:11:01.679Z",
        "dateUpdated": "2026-10-21T12:51:49.003Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:51:49.003Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix SCMI device destroy lifetimes\n\nscmi_child_dev_find() drops the reference returned by\ndevice_find_child() before returning the scmi_device pointer. A\nconcurrent unregister can then release the device while the destroy path\nis still using the returned pointer.\n\nMake the lookup helper return the device_find_child() reference and keep\nit until scmi_device_destroy() has finished unregistering the child.\n\nAlso split device_unregister() in __scmi_device_destroy() so the SCMI bus\nID is not made reusable until after device_del() has removed the old\nscmi_dev.N name from sysfs. This avoids a new SCMI device reusing the\nsame ID while the old device is still registered.\n\nThe final device release callback is also a possible cleanup path when\nSCMI children are deleted by driver core recursion rather than\n__scmi_device_destroy(). Release the SCMI bus ID from a common helper\nused by destroy, register-failure and final-release paths, and clear\nscmi_dev->id after freeing it so the final release cannot free the same\nID again."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/arm_scmi/bus.c"
                    ],
                    "versions": [
                        {
                            "version": "2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3",
                            "lessThan": "d8ecdceeb90cd2c265b222a7b65487faf68fea73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "969d8beaa2e374387bf9aa5602ef84fc50bb48d8",
                            "lessThan": "916e27f71a80f6d77c48d1a1a5782d6d5ef9017c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9ca67840c0ddf3f39407339624cef824a4f27599",
                            "lessThan": "a60bc2df2d323cc1342f0cf95563cae266801e20",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9ca67840c0ddf3f39407339624cef824a4f27599",
                            "lessThan": "c59b3393df1348a12308aaabd5fbc58ed6b21cf5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9ca67840c0ddf3f39407339624cef824a4f27599",
                            "lessThan": "6abe8fe36b29ff51d1a42c2f338972883f4751a5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91ff1e9652fb9beb0174267d6bb38243dff211bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff4273d47da81b95ed9396110bcbd1b7b7470fe8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8a8a3547d5c4960da053df49c75bf623827a25da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.90",
                            "lessThan": "6.6.160",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.28",
                            "lessThan": "6.12.114",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.182",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.138",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.6",
                            "lessThan": "6.15",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/arm_scmi/bus.c"
                    ],
                    "versions": [
                        {
                            "version": "6.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "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": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.28",
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                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.182"
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                                    "versionStartIncluding": "6.14.6"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d8ecdceeb90cd2c265b222a7b65487faf68fea73"
                },
                {
                    "url": "https://git.kernel.org/stable/c/916e27f71a80f6d77c48d1a1a5782d6d5ef9017c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a60bc2df2d323cc1342f0cf95563cae266801e20"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5"
                }
            ],
            "title": "firmware: arm_scmi: Fix SCMI device destroy lifetimes",
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}