{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2024-46840",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-09-11T15:12:18.288Z",
        "datePublished": "2024-09-27T12:39:34.998Z",
        "dateUpdated": "2026-05-11T20:37:33.572Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T20:37:33.572Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clean up our handling of refs == 0 in snapshot delete\n\nIn reada we BUG_ON(refs == 0), which could be unkind since we aren't\nholding a lock on the extent leaf and thus could get a transient\nincorrect answer.  In walk_down_proc we also BUG_ON(refs == 0), which\ncould happen if we have extent tree corruption.  Change that to return\n-EUCLEAN.  In do_walk_down() we catch this case and handle it correctly,\nhowever we return -EIO, which -EUCLEAN is a more appropriate error code.\nFinally in walk_up_proc we have the same BUG_ON(refs == 0), so convert\nthat to proper error handling.  Also adjust the error message so we can\nactually do something with the information."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/extent-tree.c"
                    ],
                    "versions": [
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "c847b28a799733b04574060ab9d00f215970627d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "71291aa7246645ef622621934d2067400380645e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "c60676b81fab456b672796830f6d8057058f029c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "728d4d045b628e006b48a448f3326a7194c88d32",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "9cc887ac24b7a0598f4042ae9af6b9a33072f75b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "7d1df13bf078ffebfedd361d714ff6cee1ff01b9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "03804641ec2d0da4fa088ad21c88e703d151ce16",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2c47e605a91dde6b0514f689645e7ab336c8592a",
                            "lessThan": "b8ccef048354074a548f108e51d0557d6adfd3a3",
                            "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/btrfs/extent-tree.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.31",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.31",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.322",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.284",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.226",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.167",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.110",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.51",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.10",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11",
                            "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": "4.19.322"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "5.4.284"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "5.10.226"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "5.15.167"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "6.1.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "6.6.51"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "6.10.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.31",
                                    "versionEndExcluding": "6.11"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3"
                }
            ],
            "title": "btrfs: clean up our handling of refs == 0 in snapshot delete",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-09-29T13:59:36.735049Z",
                                "id": "CVE-2024-46840",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-29T13:59:41.445Z"
                }
            },
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
                    },
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2025-11-03T22:19:28.536Z"
                }
            }
        ]
    }
}