{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93086",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T15:57:05.662Z",
        "datePublished": "2026-09-17T16:11:05.025Z",
        "dateUpdated": "2026-10-19T09:05:21.827Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:05:21.827Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Avoid IDR updates while cleaning channels\n\nscmi_cleanup_channels() walks the TX/RX channel IDRs with\nidr_for_each() to free transport resources and destroy the dedicated\ntransport devices before calling idr_destroy().\n\nThe destroy callback removed each entry from the same IDR being walked.\nThat is not needed for this cleanup path, and it is unsafe because\nidr_for_each() has not advanced its radix-tree iterator while the\ncallback is running. Removing the current entry from the callback can\ninvalidate the iterator state. The callback also cannot be protected by\nrcu_read_lock(), because scmi_device_destroy() may sleep.\n\nLeave IDR teardown to the following idr_destroy() call and keep the\ncallback limited to device destruction."
                }
            ],
            "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/driver.c"
                    ],
                    "versions": [
                        {
                            "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
                            "lessThan": "aed24a3c63920539e9de7fbfe7929a2e7c888cd2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
                            "lessThan": "431c6b872ba7fedcc5a3afb0ec3517db4d95d088",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
                            "lessThan": "54e5a4f7d83db4552d963d0785be32d9df680dcd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
                            "lessThan": "bab26acebe55e8ad3ab545abda72faa7ca28c477",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
                            "lessThan": "c38b1e19485aaa820e52cfe162525a8af67563da",
                            "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/firmware/arm_scmi/driver.c"
                    ],
                    "versions": [
                        {
                            "version": "6.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.3",
                            "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": "6.3",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/aed24a3c63920539e9de7fbfe7929a2e7c888cd2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/431c6b872ba7fedcc5a3afb0ec3517db4d95d088"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54e5a4f7d83db4552d963d0785be32d9df680dcd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bab26acebe55e8ad3ab545abda72faa7ca28c477"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c38b1e19485aaa820e52cfe162525a8af67563da"
                }
            ],
            "title": "firmware: arm_scmi: Avoid IDR updates while cleaning channels",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}