{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74263",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.877Z",
        "datePublished": "2026-08-15T05:57:39.660Z",
        "dateUpdated": "2026-08-17T05:16:05.593Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:16:05.593Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: check skb_clone in control TX\n\nt7xx_port_ctrl_tx() clones each skb fragment before passing it to the\nport transmit path. The clone is used immediately to set cloned->len, so\nan skb_clone() failure results in a NULL pointer dereference.\n\nCheck the clone before using it. If previous fragments were already\nqueued, preserve the driver's existing partial-write behavior by\nreturning the number of bytes submitted so far."
                }
            ],
            "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_port_wwan.c"
                    ],
                    "versions": [
                        {
                            "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
                            "lessThan": "7edd4db82f9429591de10be4c904c817f12ba029",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
                            "lessThan": "112490467586146d323cb7230b1d72137e36900c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
                            "lessThan": "f7aebaee2961bfcb86f282202d3dbd9b69db1a7c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
                            "lessThan": "4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
                            "lessThan": "05f789fa90d95d5771230e78453cedff2486039d",
                            "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_port_wwan.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "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": "6.4",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029"
                },
                {
                    "url": "https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095"
                },
                {
                    "url": "https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d"
                }
            ],
            "title": "net: wwan: t7xx: check skb_clone in control TX",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}