{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90063",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.784Z",
        "datePublished": "2026-09-17T16:05:46.968Z",
        "dateUpdated": "2026-10-19T08:57:20.621Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:57:20.621Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: Ensure that TCP packets don't overflow gso_segs\n\nThe user can specify any gso_size in a packet crafted with an AF_PACKET\nPACKET_VNET_HDR socket, even smaller than TCP_MIN_GSO_SIZE = 8. At the\nsame time, GSO_MAX_SIZE = 8 * GSO_MAX_SEGS = 8 * 65535. When the user\ncrafts a packet with gso_size < 8, there is a risk for partial GSO to\noverflow the 16-bit gso_segs field when dividing the SKB length by\ngso_size.\n\nAdjust gso_size of TCP packets to be at least TCP_MIN_GSO_SIZE = 8. Keep\ngso_size of UDP GSO packets, as gso_size=1 is valid and explicitly\ntested at tools/testing/selftests/net/tun.c:649."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/virtio_net.h"
                    ],
                    "versions": [
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "d3d111fe809773edbb4ae121e36253b7d683509a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "8f6667a081887c2b59c6f3dd86c1789ada563762",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "339f47ae04dcc6b5a730dd6bc70dddc8937c3260",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "29bd12c7c5f9d6cf855b87bace18f71e9607f9e8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "0e5ed3b98d1d8d251acfdccfeaa607453ad12954",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "75c271c48f483af678e514734e10b2452410e08c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c6d2ecbda83150b2036a2b36b21381ad4667762",
                            "lessThan": "c27c449d455aafd9018a3cbab150f1c42c87923f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bfbaf151efe491e30697e21c8b7ae1b615480873",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c83456601e65a6dd371ddf595510183d198e9b1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b3ebd9830c6026c98f03f7047c9d608573773f13",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b96fb681ca789629b8ba3da99ca3b2e6fa807f0a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.14.187",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.131",
                            "lessThan": "4.20",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.46",
                            "lessThan": "5.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.6.18",
                            "lessThan": "5.7",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/virtio_net.h"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "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": "5.7",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14.187"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19.131"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4.46"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d3d111fe809773edbb4ae121e36253b7d683509a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f6667a081887c2b59c6f3dd86c1789ada563762"
                },
                {
                    "url": "https://git.kernel.org/stable/c/339f47ae04dcc6b5a730dd6bc70dddc8937c3260"
                },
                {
                    "url": "https://git.kernel.org/stable/c/29bd12c7c5f9d6cf855b87bace18f71e9607f9e8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e5ed3b98d1d8d251acfdccfeaa607453ad12954"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75c271c48f483af678e514734e10b2452410e08c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c27c449d455aafd9018a3cbab150f1c42c87923f"
                }
            ],
            "title": "virtio-net: Ensure that TCP packets don't overflow gso_segs",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}