{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98236",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.329Z",
        "datePublished": "2026-10-06T08:45:08.600Z",
        "dateUpdated": "2026-10-19T09:16:08.044Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:16:08.044Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: mhi_wwan_mbim: check skb_copy_bits() return value\n\nmhi_mbim_rx() ignores the return value of skb_copy_bits() when it\ncopies each datagram out of the NTB.  The datagram offset and length\ncome from the DPE, which is only checked to lie within the NTB\nitself, so a modem can point a datagram outside the received skb.\nThe copy then fails and the freshly allocated skbn is passed to\nnetif_rx() with its uninitialized contents still in place, leaking\nkernel heap memory into the network stack.\n\nFree the skb and account an error when the copy fails.\n\n\nVerified in a QEMU guest with a fault injector pointing a DPE\noutside the received NTB: the copy fails, and the unpatched driver\nhands the uninitialized skbn to the network stack (observed as\n\"unknown protocol\" on bytes that were never written).  With this\ncheck the failed datagram is dropped and counted as an rx error.\n\nChanges in v2: factor the free-and-count sequence out into\nmhi_mbim_rx_drop(), shared with the unknown-protocol path, as\nsuggested by Loic Poulain."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wwan/mhi_wwan_mbim.c"
                    ],
                    "versions": [
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "650af68435eaee783824457d2ef78cc5c03c1e88",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "350fd3125ee26b5243935fd9e2b4d162ffba430a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "dd136f1fdd1059f3bc25ede3a8def8f0ee151ce7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "298659c3677bf622afa9d77549cb4a967f9541e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "02eba5f36d20283f144f75d47f0354a85e4f78f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "7e98216e9da08b79e07a514d2a4f7646f8c9ccb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c",
                            "lessThan": "31550d585589fde1ae95bf7f7a8188b2d2fdf1c7",
                            "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/mhi_wwan_mbim.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "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": "5.15",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/650af68435eaee783824457d2ef78cc5c03c1e88"
                },
                {
                    "url": "https://git.kernel.org/stable/c/350fd3125ee26b5243935fd9e2b4d162ffba430a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dd136f1fdd1059f3bc25ede3a8def8f0ee151ce7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/298659c3677bf622afa9d77549cb4a967f9541e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/02eba5f36d20283f144f75d47f0354a85e4f78f0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7e98216e9da08b79e07a514d2a4f7646f8c9ccb9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/31550d585589fde1ae95bf7f7a8188b2d2fdf1c7"
                }
            ],
            "title": "net: wwan: mhi_wwan_mbim: check skb_copy_bits() return value",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}