{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80901",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.800Z",
        "datePublished": "2026-09-04T17:11:15.780Z",
        "dateUpdated": "2026-09-04T17:11:15.780Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-04T17:11:15.780Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix the checksum validations\n\nip_vs_in_icmp_v6() is missing checksum validation for ICMPv6\npackets from clients. In fact, as for TCP/UDP we should\nvalidate the checksum for ICMP packets only when we\nmangle the packets on MASQ or on reply for tunnel.\n\nAlso, Sashiko points out that handle_response_icmp() being\ncommon for IPv4 and IPv6 is missing the pseudo-header\ncalculation while validating ICMPv6 messages from real\nservers which is a problem if checksum is not validated\nby the hardware.\n\nFix the problems by creating ip_vs_checksum_common_check()\nhelper and use it for TCP/UDP/ICMP both for IPv4 and IPv6.\nRely on the nf_checksum() for validating the ICMP messages\nbut use it also for TCP and UDP.\n\nUse correct IP offset for IP_VS_DBG_RL_PKT for TCP/UDP/SCTP.\n\nIPVS packets (TCP/UDP/SCTP/ICMP) do not need checksum\nvalidation on LOCAL_OUT (local clients or local real\nservers) and on FORWARD (traffic from servers on LAN).\nDo it only on LOCAL_IN, in case nf_checksum() is not\ncalled on PRE_ROUTING.\n\nAlso, ip_vs_checksum_complete() can be marked static."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/ip_vs.h",
                        "net/netfilter/ipvs/ip_vs_core.c",
                        "net/netfilter/ipvs/ip_vs_proto_sctp.c",
                        "net/netfilter/ipvs/ip_vs_proto_tcp.c",
                        "net/netfilter/ipvs/ip_vs_proto_udp.c"
                    ],
                    "versions": [
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "d418d73acf8be62744dc47359dfdde8c2148845d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "b3869d9b54e76dff64118dee4c8fd9302fcd5171",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "9cbe2c0fdb71904ee929b1851cdc1c73341a03c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "00eb23829fd08df1b5e057cb6b625996a70e7e65",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "5558a85add073215b298f3e044ff9a6d86d714ae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
                            "lessThan": "e876b75b9020a97bbdc79721e7fc749024891c65",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/ip_vs.h",
                        "net/netfilter/ipvs/ip_vs_core.c",
                        "net/netfilter/ipvs/ip_vs_proto_sctp.c",
                        "net/netfilter/ipvs/ip_vs_proto_tcp.c",
                        "net/netfilter/ipvs/ip_vs_proto_udp.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.28",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.28",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.151",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.103",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "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": "2.6.28",
                                    "versionEndExcluding": "6.1.183"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.6.151"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.12.103"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.18.44"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "7.1.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d418d73acf8be62744dc47359dfdde8c2148845d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b3869d9b54e76dff64118dee4c8fd9302fcd5171"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cbe2c0fdb71904ee929b1851cdc1c73341a03c0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/00eb23829fd08df1b5e057cb6b625996a70e7e65"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5558a85add073215b298f3e044ff9a6d86d714ae"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e876b75b9020a97bbdc79721e7fc749024891c65"
                }
            ],
            "title": "ipvs: fix the checksum validations",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}