{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-68191",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-16T13:41:40.253Z",
        "datePublished": "2025-12-16T13:43:13.146Z",
        "dateUpdated": "2026-05-11T21:48:25.272Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:48:25.272Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp_tunnel: use netdev_warn() instead of netdev_WARN()\n\nnetdev_WARN() uses WARN/WARN_ON to print a backtrace along with\nfile and line information. In this case, udp_tunnel_nic_register()\nreturning an error is just a failed operation, not a kernel bug.\n\nudp_tunnel_nic_register() can fail due to a memory allocation\nfailure (kzalloc() or udp_tunnel_nic_alloc()).\nThis is a normal runtime error and not a kernel bug.\n\nReplace netdev_WARN() with netdev_warn() accordingly."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/udp_tunnel_nic.c"
                    ],
                    "versions": [
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "c018a87942bf1607aeebf8dba5a210ca9a09a0fd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "51b3033088f0420b19027e3d54cd989b6ebd987e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "3c3b148bf8384c8a787753cf20abde1c5731f97f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc4e3835eff474aa274d6e1d18f69d9d296d3b76",
                            "lessThan": "dc2f650f7e6857bf384069c1a56b2937a1ee370d",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/udp_tunnel_nic.c"
                    ],
                    "versions": [
                        {
                            "version": "5.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.247",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.197",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.159",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.117",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.58",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.8",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "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": "5.9",
                                    "versionEndExcluding": "5.10.247"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "5.15.197"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.1.159"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.6.117"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.12.58"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.17.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c018a87942bf1607aeebf8dba5a210ca9a09a0fd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/51b3033088f0420b19027e3d54cd989b6ebd987e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3c3b148bf8384c8a787753cf20abde1c5731f97f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc2f650f7e6857bf384069c1a56b2937a1ee370d"
                }
            ],
            "title": "udp_tunnel: use netdev_warn() instead of netdev_WARN()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}