{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80651",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.779Z",
        "datePublished": "2026-08-28T06:48:59.460Z",
        "dateUpdated": "2026-08-28T06:48:59.460Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-28T06:48:59.460Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp/sev-dev-tsm - bail out early when pdev->bus is NULL\n\ndsm_create() initially checks pdev->bus when computing segment_id:\n\n\tu8 segment_id = pdev->bus ? pci_domain_nr(pdev->bus) : 0;\n\nBut the next two lines unconditionally dereference pdev->bus via\npcie_find_root_port() and especially pci_dev_id(pdev), which expands\nto PCI_DEVID(dev->bus->number, dev->devfn). If pdev->bus is in fact\nNULL, segment_id is initialised to 0 but the very next statement\ncrashes the kernel.\n\nsmatch flags this:\n\n  drivers/crypto/ccp/sev-dev-tsm.c:253 dsm_create() error: we\n    previously assumed 'pdev->bus' could be null (see line 251)\n\nMake the NULL handling consistent: if pdev->bus is NULL the device\nhas no PCI context to work with and SEV TIO setup cannot proceed,\nso return -ENODEV before any of the bus-dependent lookups. The\nremaining initialisation now runs only on the path where pdev->bus\nis known to be valid.\n\nNo change for callers where pdev->bus is non-NULL, which is the\nonly case where dsm_create() did meaningful work before this change."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/crypto/ccp/sev-dev-tsm.c"
                    ],
                    "versions": [
                        {
                            "version": "4be423572da1f4c11f45168e3fafda870ddac9f8",
                            "lessThan": "6bafd740095fb3d0e9a00540bc8f3484c38e6f85",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4be423572da1f4c11f45168e3fafda870ddac9f8",
                            "lessThan": "930d9d36ea618a775985446a125aedeb401db522",
                            "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/crypto/ccp/sev-dev-tsm.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6bafd740095fb3d0e9a00540bc8f3484c38e6f85"
                },
                {
                    "url": "https://git.kernel.org/stable/c/930d9d36ea618a775985446a125aedeb401db522"
                }
            ],
            "title": "crypto: ccp/sev-dev-tsm - bail out early when pdev->bus is NULL",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}