{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90426",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.814Z",
        "datePublished": "2026-09-17T16:09:48.460Z",
        "dateUpdated": "2026-10-19T09:03:29.972Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:03:29.972Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs\n\ntegra241_cmdqv_remove() tears each VINTF down first, then calls free_irq().\nTearing a VINTF down frees vintf0 and clears cmdqv->vintfs[0]. An error in\nthat window makes tegra241_cmdqv_isr() read the stale slot and hand it to\ntegra241_vintf0_handle_error(), which dereferences a NULL or freed pointer.\n\nFree the IRQ before tearing the VINTFs down. free_irq() waits for in-flight\nhandlers to finish and blocks new ones, so no ISR can observe a VINTF as it\nis torn down.\n\nNote: a user-owned VINTF (viommu) could outlive this teardown, which unmaps\ncmdqv->base and frees cmdqv->vintfs, so a later viommu close then touches\nfreed memory. This is neither introduced nor fixed here: a physical IOMMU\nis not a pluggable device, so iommufd by design holds no reference on the\none behind a viommu, and this teardown is not expected while that viommu is\nstill alive."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
                    ],
                    "versions": [
                        {
                            "version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
                            "lessThan": "076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
                            "lessThan": "735698e81f798b4c02dcb6291ffbdd1b962c8c66",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
                            "lessThan": "421f5ab135cd4a1353891e5bf2602cfc3c01afc7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
                            "lessThan": "61f0d437988e5730b04442f6a7d30a9907339f2a",
                            "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/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "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": "6.12",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48"
                },
                {
                    "url": "https://git.kernel.org/stable/c/735698e81f798b4c02dcb6291ffbdd1b962c8c66"
                },
                {
                    "url": "https://git.kernel.org/stable/c/421f5ab135cd4a1353891e5bf2602cfc3c01afc7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/61f0d437988e5730b04442f6a7d30a9907339f2a"
                }
            ],
            "title": "iommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}