{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-47660",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsnotify: clear PARENT_WATCHED flags lazily\n\nIn some setups directories can have many (usually negative) dentries.\nHence __fsnotify_update_child_dentry_flags() function can take a\nsignificant amount of time. Since the bulk of this function happens\nunder inode->i_lock this causes a significant contention on the lock\nwhen we remove the watch from the directory as the\n__fsnotify_update_child_dentry_flags() call from fsnotify_recalc_mask()\nraces with __fsnotify_update_child_dentry_flags() calls from\n__fsnotify_parent() happening on children. This can lead upto softlockup\nreports reported by users.\n\nFix the problem by calling fsnotify_update_children_dentry_flags() to\nset PARENT_WATCHED flags only when parent starts watching children.\n\nWhen parent stops watching children, clear false positive PARENT_WATCHED\nflags lazily in __fsnotify_parent() for each accessed child."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "3f3ef1d9f66b"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.10.226",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.167",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.109",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.50",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.10.9",
                                                        "lessThanOrEqual": "6.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.11",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/3f3ef1d9f66b93913ce2171120d9226b55acd41d",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/3f3ef1d9f66b93913ce2171120d9226b55acd41d"
            },
            {
                "url": "https://git.kernel.org/stable/c/f9a48bc3dd9099935751458a5bbbea4b7c28abc8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f9a48bc3dd9099935751458a5bbbea4b7c28abc8"
            },
            {
                "url": "https://git.kernel.org/stable/c/d8c42405fc3507cc43ba7e4986a773c3fc633f6e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d8c42405fc3507cc43ba7e4986a773c3fc633f6e"
            },
            {
                "url": "https://git.kernel.org/stable/c/fc1b1e135c3f72382f792e6c319fc088d5523ad5",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/fc1b1e135c3f72382f792e6c319fc088d5523ad5"
            },
            {
                "url": "https://git.kernel.org/stable/c/7ef1d2e240c32b1f337a37232d037b07e3919e1a",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7ef1d2e240c32b1f337a37232d037b07e3919e1a"
            },
            {
                "url": "https://git.kernel.org/stable/c/172e422ffea20a89bfdc672741c1aad6fbb5044e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/172e422ffea20a89bfdc672741c1aad6fbb5044e"
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