{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98383",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.345Z",
        "datePublished": "2026-10-09T07:34:22.408Z",
        "dateUpdated": "2026-10-19T09:18:33.964Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:18:33.964Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL\n\nAn LWT_SEG6LOCAL program can invalidate its cached SRH with\nbpf_lwt_seg6_adjust_srh() and then call bpf_skb_pull_data(). The latter\nmay reallocate skb->head, leaving the per-CPU SRH pointer dangling.\nPost-program SRH validation then writes through that pointer.\n\nDisallow bpf_skb_pull_data() for LWT_SEG6LOCAL programs so the verifier\nrejects this unsafe helper combination. Other LWT program types continue\nto expose the helper through lwt_out_func_proto()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/filter.c"
                    ],
                    "versions": [
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "0f38472a2aa8704a6b514c0dfa9c32f3672b8f32",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "cae8674489f26edf7553fdd660599466cbb4c32f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "9f9e57b5a3a033f95f49ef9d541340cdbcb80abb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "df0072be6fc373cb22f9ea854d458b04e32a03cf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "b9bb0e735460751b620156f800a4279a28573392",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "37b18688cd18fd86d2f35c212df1611862a26cd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "fca71ead7a20290af1e2046983eeafae43d21af1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "e4a62833adff6ef0fe7c0b90393204fe3c26b5c5",
                            "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/core/filter.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "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": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "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": "4.18",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
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                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "7.2.9"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0f38472a2aa8704a6b514c0dfa9c32f3672b8f32"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cae8674489f26edf7553fdd660599466cbb4c32f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9f9e57b5a3a033f95f49ef9d541340cdbcb80abb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df0072be6fc373cb22f9ea854d458b04e32a03cf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b9bb0e735460751b620156f800a4279a28573392"
                },
                {
                    "url": "https://git.kernel.org/stable/c/37b18688cd18fd86d2f35c212df1611862a26cd5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fca71ead7a20290af1e2046983eeafae43d21af1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e4a62833adff6ef0fe7c0b90393204fe3c26b5c5"
                }
            ],
            "title": "bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL",
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    }
}