{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98937",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.381Z",
        "datePublished": "2026-10-23T12:11:53.327Z",
        "dateUpdated": "2026-10-26T06:56:51.396Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-26T06:56:51.396Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Check kernel access when kernel callchains are requested\n\nperf_event_open() currently gates perf_allow_kernel() only on\n!attr.exclude_kernel.\n\nHowever, users can still request kernel callchain collection with\nattr.exclude_callchain_kernel == 0 even when attr.exclude_kernel == 1.\nThat still requires kernel profiling privilege, but the existing check\ndoes not enforce it.\n\nUpdate the permission check to call perf_allow_kernel() when either\nkernel sampling is requested or kernel callchains are requested.\n\nThis keeps permission checks aligned with requested data and prevents\nunprivileged use of kernel callchain capture."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/events/core.c"
                    ],
                    "versions": [
                        {
                            "version": "0764771dab80d7b84b9a271bee7f1b21a04a3f0c",
                            "lessThan": "132bee76097be421ab3012130b5b506324cf2be1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0764771dab80d7b84b9a271bee7f1b21a04a3f0c",
                            "lessThan": "2581b43e162cfc43e6f5d8dd8d2b38f3441550de",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0764771dab80d7b84b9a271bee7f1b21a04a3f0c",
                            "lessThan": "6e187281f978a2bff98ead6aa40f8ddc9a2c9afb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0764771dab80d7b84b9a271bee7f1b21a04a3f0c",
                            "lessThan": "a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/events/core.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.31",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.31",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "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": "2.6.31",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/132bee76097be421ab3012130b5b506324cf2be1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2581b43e162cfc43e6f5d8dd8d2b38f3441550de"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6e187281f978a2bff98ead6aa40f8ddc9a2c9afb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f"
                }
            ],
            "title": "perf/core: Check kernel access when kernel callchains are requested",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}