{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98085",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:19:56.075Z",
        "datePublished": "2026-09-25T10:24:20.485Z",
        "dateUpdated": "2026-10-21T12:54:27.055Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:54:27.055Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge\n\nNicholas Carlini reported a bug in precision backtracking mechanism\nfor BPF_LD | BPF_{IND,ABS} instructions. These instructions are\nmodelled as two branches:\n- fallthrough;\n- implicit exit from current subprogram.\n\nThe implicit exit case was not handled by the backtrack_insn()\nfunction. When backtracking such a path backtrack_insn() did not\ncall bt_subprog_enter(), which meant that backtracking continued\nmanipulating precision marks in a caller frame, while looking at\ninstructions in a callee frame.\n\nThis lead to segmentation faults during verification (see the\nselftest), or unsound state pruning."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/backtrack.c"
                    ],
                    "versions": [
                        {
                            "version": "37ad2bb11e9de92cb7b94548705eeedd87f7d392",
                            "lessThan": "19cca7c36055906b3cff3e297618ee8a50cde25d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8674e2db06cff6b50f2216eed9a761d15425bb34",
                            "lessThan": "12c064bcfa56e3631be9f5336ee113b7f849959a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337",
                            "lessThan": "a0cd9e22f8faed30a8da8be357c51bd8b3074ee9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee861486e377edc55361c08dcbceab3f6b6577bd",
                            "lessThan": "671b7b9a660ef15b25faa3df161205b9dc8d1eb2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee861486e377edc55361c08dcbceab3f6b6577bd",
                            "lessThan": "387b1baefbb776e3f48dc2261e77a49213f470f7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "928d354ae3557e8f755a227e67be88034eb3cd7f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "de1055e7f9e67af32b1f3376066272b04e5223c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d846d83bdacbd8f14fc45c63b8c1d22608452e1c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.148",
                            "lessThan": "6.6.160",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThan": "6.12.114",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThan": "6.18.57",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThan": "5.11",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.10",
                            "lessThan": "7.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/backtrack.c"
                    ],
                    "versions": [
                        {
                            "version": "7.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "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:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.148",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.101",
                                    "versionEndExcluding": "6.12.114"
                                },
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                                    "versionStartIncluding": "6.18.42",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.1",
                                    "versionEndExcluding": "7.2.7"
                                },
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                                    "versionStartIncluding": "7.1",
                                    "versionEndExcluding": "7.3"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10.265"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.216"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.183"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0.10"
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                            ]
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/19cca7c36055906b3cff3e297618ee8a50cde25d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/12c064bcfa56e3631be9f5336ee113b7f849959a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a0cd9e22f8faed30a8da8be357c51bd8b3074ee9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/671b7b9a660ef15b25faa3df161205b9dc8d1eb2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/387b1baefbb776e3f48dc2261e77a49213f470f7"
                }
            ],
            "title": "bpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge",
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