{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90079",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.785Z",
        "datePublished": "2026-09-17T16:05:57.541Z",
        "dateUpdated": "2026-10-19T08:57:35.887Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:57:35.887Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()\n\nrvu_mbox_init() is called separately for AF-PF mailboxes during probe\nand for AF-VF mailboxes when SR-IOV is enabled.  Each call used to\nallocate a new ng_rvu object, leaking the first allocation when the\npointer was overwritten on the second call.\n\nSharing one ng_rvu across both paths exposed several teardown bugs:\nthe error path freed all cn20k mailbox DMA and kfree()d ng_rvu even\nwhen only the failing init type should be unwound, leaving live AF-PF\nmailbox memory in use after an AF-VF init failure.  mutex_init() was\nalso re-run on the AF-VF path while AF-PF mailbox handlers could still\nhold rvu->mbox_lock.  Probe and SR-IOV failure paths did not release\ncn20k mailbox DMA either, since cleanup only happened in rvu_remove().\n\nAllocate ng_rvu once with devm_kzalloc(), initialize mbox_lock in the\nsame block, unwind only the mailbox memory for the failing init type,\nand free cn20k mailbox DMA from the probe and pci_enable_sriov()\nerror paths."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h",
                        "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c",
                        "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"
                    ],
                    "versions": [
                        {
                            "version": "e53ee4acb220acab6832669334279367b0206af6",
                            "lessThan": "c08314f91782983d67af0807ed1360e404ac4a8b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e53ee4acb220acab6832669334279367b0206af6",
                            "lessThan": "a0fcbea79f034f49bdd44915f28938922023458d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e53ee4acb220acab6832669334279367b0206af6",
                            "lessThan": "3b11a77f69980932c3924054d66e565c9a135747",
                            "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/net/ethernet/marvell/octeontx2/af/cn20k/api.h",
                        "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c",
                        "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"
                    ],
                    "versions": [
                        {
                            "version": "6.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.17",
                            "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": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "6.18.57"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c08314f91782983d67af0807ed1360e404ac4a8b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a0fcbea79f034f49bdd44915f28938922023458d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3b11a77f69980932c3924054d66e565c9a135747"
                }
            ],
            "title": "octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}