cvelist/2024/45xxx/CVE-2024-45020.json

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        "ID": "CVE-2024-45020",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix a kernel verifier crash in stacksafe()\n\nDaniel Hodges reported a kernel verifier crash when playing with sched-ext.\nFurther investigation shows that the crash is due to invalid memory access\nin stacksafe(). More specifically, it is the following code:\n\n    if (exact != NOT_EXACT &&\n        old->stack[spi].slot_type[i % BPF_REG_SIZE] !=\n        cur->stack[spi].slot_type[i % BPF_REG_SIZE])\n            return false;\n\nThe 'i' iterates old->allocated_stack.\nIf cur->allocated_stack < old->allocated_stack the out-of-bound\naccess will happen.\n\nTo fix the issue add 'i >= cur->allocated_stack' check such that if\nthe condition is true, stacksafe() should fail. Otherwise,\ncur->stack[spi].slot_type[i % BPF_REG_SIZE] memory access is legal."
            }
        ]
    },
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        "problemtype_data": [
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                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
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                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
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                                            "version_name": "ab470fefce28",
                                            "version_value": "7cad3174cc79"
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                                        {
                                            "version_affected": "<",
                                            "version_name": "2793a8b015f7",
                                            "version_value": "6e3987ac310c"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.7",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.7",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.48",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
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                                                    {
                                                        "version": "6.10.7",
                                                        "lessThanOrEqual": "6.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.11",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/7cad3174cc79519bf5f6c4441780264416822c08",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7cad3174cc79519bf5f6c4441780264416822c08"
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                "name": "https://git.kernel.org/stable/c/6e3987ac310c74bb4dd6a2fa8e46702fe505fb2b"
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            {
                "url": "https://git.kernel.org/stable/c/bed2eb964c70b780fb55925892a74f26cb590b25",
                "refsource": "MISC",
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