{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31616",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.123Z",
        "datePublished": "2026-04-24T14:42:35.480Z",
        "dateUpdated": "2026-06-14T17:43:01.212Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T17:43:01.212Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_phonet: fix skb frags[] overflow in pn_rx_complete()\n\nA broken/bored/mean USB host can overflow the skb_shared_info->frags[]\narray on a Linux gadget exposing a Phonet function by sending an\nunbounded sequence of full-page OUT transfers.\n\npn_rx_complete() finalizes the skb only when req->actual < req->length,\nwhere req->length is set to PAGE_SIZE by the gadget.  If the host always\nsends exactly PAGE_SIZE bytes per transfer, fp->rx.skb will never be\nreset and each completion will add another fragment via\nskb_add_rx_frag().  Once nr_frags exceeds MAX_SKB_FRAGS (default 17),\nsubsequent frag stores overwrite memory adjacent to the shinfo on the\nheap.\n\nDrop the skb and account a length error when the frag limit is reached,\nmatching the fix applied in t7xx by commit f0813bcd2d9d (\"net: wwan:\nt7xx: fix potential skb->frags overflow in RX path\")."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/gadget/function/f_phonet.c"
                    ],
                    "versions": [
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "3d7f7e0c842242878c24b2facff8d6eda23ee1e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "b5ec49fa198bd08967a3102bd41f53ccadce72c9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "7424f0287da73d3d8c5fa5e9d25d26fce762708e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "9ceff1251904901b0b4e5fe6350fcaffa368ce83",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "c9315ce9da3632c591666a29de82d3e92d46bec1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "4e476c25bfcab0535ba7c76a903ae77ca8747711",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "bd44ce09b9b569f49ed13e2d87d23d853fc7d6a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "66f7471c4042e4eb300e30b5b9d87d1406862673",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b91cd1440870f7a0649e570498b7b93caf9f781c",
                            "lessThan": "c088d5dd2fffb4de1fb8e7f57751c8b82942180a",
                            "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/usb/gadget/function/f_phonet.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.32",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.32",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.136",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.83",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.24",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.14",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.1",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "2.6.32",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.6.136"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.12.83"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.18.24"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.19.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.0.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3d7f7e0c842242878c24b2facff8d6eda23ee1e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b5ec49fa198bd08967a3102bd41f53ccadce72c9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7424f0287da73d3d8c5fa5e9d25d26fce762708e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9ceff1251904901b0b4e5fe6350fcaffa368ce83"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c9315ce9da3632c591666a29de82d3e92d46bec1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4e476c25bfcab0535ba7c76a903ae77ca8747711"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bd44ce09b9b569f49ed13e2d87d23d853fc7d6a7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/66f7471c4042e4eb300e30b5b9d87d1406862673"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c088d5dd2fffb4de1fb8e7f57751c8b82942180a"
                }
            ],
            "title": "usb: gadget: f_phonet: fix skb frags[] overflow in pn_rx_complete()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}