{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23309",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.994Z",
        "datePublished": "2026-03-25T10:27:04.828Z",
        "dateUpdated": "2026-05-11T22:04:23.455Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:04:23.455Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add NULL pointer check to trigger_data_free()\n\nIf trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse()\njumps to the out_free error path. While kfree() safely handles a NULL\npointer, trigger_data_free() does not. This causes a NULL pointer\ndereference in trigger_data_free() when evaluating\ndata->cmd_ops->set_filter.\n\nFix the problem by adding a NULL pointer check to trigger_data_free().\n\nThe problem was found by an experimental code review agent based on\ngemini-3.1-pro while reviewing backports into v6.18.y."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/trace_events_trigger.c"
                    ],
                    "versions": [
                        {
                            "version": "c10f0efe57728508d796ae4ba7abe4c14ec3d8ef",
                            "lessThan": "13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7e6556e9329bc484e9dcdab6e346d959267c0636",
                            "lessThan": "59c15b9cc453b74beb9f04c6c398717e73612dc3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9b0513905e0598b9f8cfccab8e47497aed5d935d",
                            "lessThan": "42b380f97d65e76e7b310facd525f730272daf57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "335dfe4bc6368e70e8c15419375cf609c4f85558",
                            "lessThan": "2ce8ece5a78da67834db7728edc801889a64f643",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e42efbe9754da78eafe11f6bd3ca9c8a094a752a",
                            "lessThan": "477469223b2b840f436ce204333de87cb17e5d93",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0550069cc25f513ce1f109c88f7c1f01d63297db",
                            "lessThan": "457965c13f0837a289c9164b842d0860133f6274",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/trace_events_trigger.c"
                    ],
                    "versions": [
                        {
                            "version": "6.1.165",
                            "lessThan": "6.1.167",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThan": "6.6.130",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThan": "6.12.77",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThan": "6.18.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThan": "6.19.7",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.165",
                                    "versionEndExcluding": "6.1.167"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.128",
                                    "versionEndExcluding": "6.6.130"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.75",
                                    "versionEndExcluding": "6.12.77"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18.14",
                                    "versionEndExcluding": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19.4",
                                    "versionEndExcluding": "6.19.7"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643"
                },
                {
                    "url": "https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93"
                },
                {
                    "url": "https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274"
                }
            ],
            "title": "tracing: Add NULL pointer check to trigger_data_free()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}