{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-97443",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-24T14:53:16.870Z",
        "datePublished": "2026-09-24T16:03:57.790Z",
        "dateUpdated": "2026-09-25T12:44:20.881Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-25T12:44:20.881Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/ftrace: Fix WARNING in __unregister_ftrace_function\n\nperf_ftrace_function_unregister() unconditionally calls\nunregister_ftrace_function() without checking whether the ftrace_ops\nwas ever successfully registered. This triggers a WARN_ON in\n__unregister_ftrace_function() when the ops doesn't have\nFTRACE_OPS_FL_ENABLED set.\n\nThis can happen during perf_event_alloc() error cleanup when\nperf_trace_destroy() is called via __free_event() on an event whose\nftrace_ops registration failed or was already torn down by\nperf_try_init_event()'s err_destroy path.\n\nThe call path is:\n  perf_event_alloc() error cleanup\n    -> __free_event()\n      -> event->destroy() [tp_perf_event_destroy]\n        -> perf_trace_destroy()\n          -> perf_trace_event_close()\n            -> TRACE_REG_PERF_CLOSE\n              -> perf_ftrace_function_unregister()\n                -> unregister_ftrace_function()\n                  -> __unregister_ftrace_function()\n                    -> WARN_ON(!(ops->flags & FTRACE_OPS_FL_ENABLED))\n\nFix this by checking FTRACE_OPS_FL_ENABLED before attempting to\nunregister. If the ops is not enabled, just free the filter and\nreturn success."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/trace_event_perf.c"
                    ],
                    "versions": [
                        {
                            "version": "7ef5aa081f989ecfecc1df02068a80aebbd3ec31",
                            "lessThan": "df097713b56ffac5eed32a9be2e7d27ac48d9087",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c70ca298036c58a88686ff388d3d367e9d21acf0",
                            "lessThan": "7f845820afaad339341c2ae42bc7fdec175df9ea",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c70ca298036c58a88686ff388d3d367e9d21acf0",
                            "lessThan": "9581123304b23049437324038698af9fb56ee663",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "315a50c6b1c6ce191f19f3372935d8e2ed9b53a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1209b0b29fd472e7dbd2b06544b019dd9f9b7e51",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.12.24",
                            "lessThan": "6.12.111",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13.12",
                            "lessThan": "6.14",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.3",
                            "lessThan": "6.15",
                            "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/trace/trace_event_perf.c"
                    ],
                    "versions": [
                        {
                            "version": "6.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.15",
                            "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",
                            "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": "6.12.24",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
                                    "versionEndExcluding": "7.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/df097713b56ffac5eed32a9be2e7d27ac48d9087"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7f845820afaad339341c2ae42bc7fdec175df9ea"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9581123304b23049437324038698af9fb56ee663"
                }
            ],
            "title": "perf/ftrace: Fix WARNING in __unregister_ftrace_function",
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                "engine": "bippy-1.2.0"
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        }
    }
}