{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-92494",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-16T12:21:13.871Z",
        "datePublished": "2026-09-17T16:10:10.073Z",
        "dateUpdated": "2026-10-19T09:04:00.500Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:04:00.500Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix buffer_head leak in ext4_init_orphan_info\n\next4_init_orphan_info() reads orphan file blocks with ext4_bread()\nand stores the returned buffer_head in oi->of_binfo[i].ob_bh.\n\nIf ext4_bread() succeeds but the orphan block magic or checksum\nvalidation fails, the function jumps to out_free. However, the old\nout_free loop starts releasing buffers from i - 1, so the current\nbuffer_head at index i is skipped.\n\nThis leaks the buffer_head reference obtained by ext4_bread() on the\nbad magic and bad checksum error paths.\n\nFix this by tracking the number of successfully read buffer_heads and\nreleasing exactly those buffer_heads on the error path."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/orphan.c"
                    ],
                    "versions": [
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "a9a6ec1298f9bc134b2c5db27d25bb10603b7113",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "35fc83c65faf7949f5701bb34b20f822560a7718",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "74637f7fef030e5fb2e835b7dfeb05efdc48e0fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "6ec53ccab0d691b3c73e03d930343ca45987e88d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "1399f102d8a1855c1a38506057306ec79d0787d9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "e1e342d9a561c016b8531ec1f4dcefaad9d64954",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02f310fcf47fa9311d6ba2946a8d19e7d7d11f37",
                            "lessThan": "05704335803b69c1bfa8637b7ada942bf2ee8a41",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/orphan.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "5.15",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a9a6ec1298f9bc134b2c5db27d25bb10603b7113"
                },
                {
                    "url": "https://git.kernel.org/stable/c/35fc83c65faf7949f5701bb34b20f822560a7718"
                },
                {
                    "url": "https://git.kernel.org/stable/c/74637f7fef030e5fb2e835b7dfeb05efdc48e0fe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6ec53ccab0d691b3c73e03d930343ca45987e88d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1399f102d8a1855c1a38506057306ec79d0787d9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1e342d9a561c016b8531ec1f4dcefaad9d64954"
                },
                {
                    "url": "https://git.kernel.org/stable/c/05704335803b69c1bfa8637b7ada942bf2ee8a41"
                }
            ],
            "title": "ext4: fix buffer_head leak in ext4_init_orphan_info",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}