{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98238",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.329Z",
        "datePublished": "2026-10-06T08:45:09.953Z",
        "dateUpdated": "2026-10-19T09:16:09.924Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:16:09.924Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: validate the netif index in t7xx_ccmni_recv_skb()\n\nThe netif index carried in the DPMAIF PIT header is five bits wide,\nbut ccmni_inst[] only has room for NIC_DEV_MAX (21) entries.\nt7xx_ccmni_recv_skb() indexes the array without a bounds check, so\nindexes 21 to 31 read past it.  The out-of-bounds value lands in the\ncallback table that follows the array, which is never NULL, so the\nexisting !ccmni check does not catch it and the driver dereferences\nwhatever sits there as a struct t7xx_ccmni.\n\nDrop the skb when the index is out of range.\n\n\nVerified in a QEMU guest with a fault injector setting the netif\nindex to 25: the unpatched driver reads a value past ccmni_inst[],\nwhich lands in the callback table, and dereferences it far enough to\nqueue the skb.  With this check the packet is dropped.  Well-formed\ntraffic on index 0 is unaffected.\n\nChanges in v2: none."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wwan/t7xx/t7xx_netdev.c"
                    ],
                    "versions": [
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "7c2fe308bda5a7e6222d7f0c3c311991372baab4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "fba45070e25abdae08bcaebfadeef050dc39e208",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "e1b0609b1a40da03e385be290853a604eb4c3fb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "9dbf13de4edff6fbc1f7ad9c4040326b6ed599ad",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "d28aa2de9654e8024922775520a2665e00c04ad5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05d19bf500f8281f574713479b04679fa226d0a3",
                            "lessThan": "c7ead9704249d57d4693a04697e3bbd285138fa9",
                            "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/wwan/t7xx/t7xx_netdev.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "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": "5.19",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/7c2fe308bda5a7e6222d7f0c3c311991372baab4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fba45070e25abdae08bcaebfadeef050dc39e208"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1b0609b1a40da03e385be290853a604eb4c3fb9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9dbf13de4edff6fbc1f7ad9c4040326b6ed599ad"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d28aa2de9654e8024922775520a2665e00c04ad5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c7ead9704249d57d4693a04697e3bbd285138fa9"
                }
            ],
            "title": "net: wwan: t7xx: validate the netif index in t7xx_ccmni_recv_skb()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}