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    "CVE_data_meta": {
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        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
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    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again\"\n\nPatch series \"mm: Avoid possible overflows in dirty throttling\".\n\nDirty throttling logic assumes dirty limits in page units fit into\n32-bits.  This patch series makes sure this is true (see patch 2/2 for\nmore details).\n\n\nThis patch (of 2):\n\nThis reverts commit 9319b647902cbd5cc884ac08a8a6d54ce111fc78.\n\nThe commit is broken in several ways.  Firstly, the removed (u64) cast\nfrom the multiplication will introduce a multiplication overflow on 32-bit\narchs if wb_thresh * bg_thresh >= 1<<32 (which is actually common - the\ndefault settings with 4GB of RAM will trigger this).  Secondly, the\ndiv64_u64() is unnecessarily expensive on 32-bit archs.  We have\ndiv64_ul() in case we want to be safe & cheap.  Thirdly, if dirty\nthresholds are larger than 1<<32 pages, then dirty balancing is going to\nblow up in many other spectacular ways anyway so trying to fix one\npossible overflow is just moot."
            }
        ]
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                        "lang": "eng",
                        "value": "n/a"
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                                            "version_name": "1f12e4b3284d",
                                            "version_value": "23a28f5f3f6c"
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                                            "version_name": "81e7d2530d45",
                                            "version_value": "145faa3d0368"
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                                        {
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                                            "version_name": "5099871b3703",
                                            "version_value": "2820005edae1"
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                                        {
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                                            "version_name": "16b1025eaa8f",
                                            "version_value": "cbbe17a32443"
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                                            "version_affected": "<",
                                            "version_name": "ec18ec230301",
                                            "version_value": "f6620df12cb6"
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                                        {
                                            "version_affected": "<",
                                            "version_name": "9319b647902c",
                                            "version_value": "000099d71648"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
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                                                    {
                                                        "version": "6.8",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.8",
                                                        "status": "unaffected",
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                                                    {
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                                                        "lessThanOrEqual": "4.19.*",
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                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
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                                                    {
                                                        "version": "5.15.163",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
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                                                    {
                                                        "version": "6.1.98",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
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                                                        "lessThanOrEqual": "6.6.*",
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                                                        "lessThanOrEqual": "6.9.*",
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