{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98031",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:19:56.070Z",
        "datePublished": "2026-09-25T10:23:47.562Z",
        "dateUpdated": "2026-10-19T09:12:36.306Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:12:36.306Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnexthop: Initialize extack in remove_nh_grp_entry()\n\nremove_nh_grp_entry() prints the extack message when a listener fails\nto replace the reduced nexthop group. However, extack is not\ninitialized and listeners are not required to set a message when\nreturning an error. Neither netdevsim nor mlxsw do so when an\nallocation fails, resulting in the dereference of an uninitialized\nstack pointer.\n\nFix by zero-initializing extack, as was done in commit 6347c5314cee\n(\"nexthop: initialize extack in nh_res_bucket_migrate()\")."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/nexthop.c"
                    ],
                    "versions": [
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "35d9ec61466109ef0c2de87067338d929f629527",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "704319510af2179cf03955747d714ab291075c25",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "030c878eaedf0449e2b5401a0a0146d0afcc645e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "d643cea4248668dc493c513aa7cbc6505eb1a4a9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "d80677ad7aa5bebfccfd58caa4852b65abe70561",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "833a1065eeb14437a9a0dfa9dad06ea09894e0b5",
                            "lessThan": "5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b",
                            "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/nexthop.c"
                    ],
                    "versions": [
                        {
                            "version": "5.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "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:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.11",
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                                {
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                                    "versionStartIncluding": "5.11",
                                    "versionEndExcluding": "7.2.7"
                                },
                                {
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                                    "versionStartIncluding": "5.11",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/35d9ec61466109ef0c2de87067338d929f629527"
                },
                {
                    "url": "https://git.kernel.org/stable/c/704319510af2179cf03955747d714ab291075c25"
                },
                {
                    "url": "https://git.kernel.org/stable/c/17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b"
                }
            ],
            "title": "nexthop: Initialize extack in remove_nh_grp_entry()",
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}