{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43210",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.993Z",
        "datePublished": "2026-05-06T11:28:13.609Z",
        "dateUpdated": "2026-05-11T22:20:07.951Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:20:07.951Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: ring-buffer: Fix to check event length before using\n\nCheck the event length before adding it for accessing next index in\nrb_read_data_buffer(). Since this function is used for validating\npossibly broken ring buffers, the length of the event could be broken.\nIn that case, the new event (e + len) can point a wrong address.\nTo avoid invalid memory access at boot, check whether the length of\neach event is in the possible range before using it."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/ring_buffer.c"
                    ],
                    "versions": [
                        {
                            "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
                            "lessThan": "b4700c089a10f89de3a5149d57f8a58306458982",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
                            "lessThan": "5026010110a5ad2268d8c23e1e286ab7c736f7ac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
                            "lessThan": "9eb80e54494ef1efef8a64bec4ffa672c9cf411e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
                            "lessThan": "912b0ee248c529a4f45d1e7f568dc1adddbf2a4a",
                            "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/trace/ring_buffer.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.16",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.18.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b4700c089a10f89de3a5149d57f8a58306458982"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5026010110a5ad2268d8c23e1e286ab7c736f7ac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9eb80e54494ef1efef8a64bec4ffa672c9cf411e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/912b0ee248c529a4f45d1e7f568dc1adddbf2a4a"
                }
            ],
            "title": "tracing: ring-buffer: Fix to check event length before using",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}