{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-52449",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: Fix gluebi NULL pointer dereference caused by ftl notifier\n\nIf both ftl.ko and gluebi.ko are loaded, the notifier of ftl\ntriggers NULL pointer dereference when trying to access\n\u2018gluebi->desc\u2019 in gluebi_read().\n\nubi_gluebi_init\n  ubi_register_volume_notifier\n    ubi_enumerate_volumes\n      ubi_notify_all\n        gluebi_notify    nb->notifier_call()\n          gluebi_create\n            mtd_device_register\n              mtd_device_parse_register\n                add_mtd_device\n                  blktrans_notify_add   not->add()\n                    ftl_add_mtd         tr->add_mtd()\n                      scan_header\n                        mtd_read\n                          mtd_read_oob\n                            mtd_read_oob_std\n                              gluebi_read   mtd->read()\n                                gluebi->desc - NULL\n\nDetailed reproduction information available at the Link [1],\n\nIn the normal case, obtain gluebi->desc in the gluebi_get_device(),\nand access gluebi->desc in the gluebi_read(). However,\ngluebi_get_device() is not executed in advance in the\nftl_add_mtd() process, which leads to NULL pointer dereference.\n\nThe solution for the gluebi module is to run jffs2 on the UBI\nvolume without considering working with ftl or mtdblock [2].\nTherefore, this problem can be avoided by preventing gluebi from\ncreating the mtdblock device after creating mtd partition of the\ntype MTD_UBIVOLUME."
            }
        ]
    },
    "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": "2ba3d76a1e29",
                                            "version_value": "aeba358bcc8f"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "2.6.31",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "2.6.31",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.306",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.268",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.209",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.148",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.75",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.14",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.7.2",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
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            ]
        }
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022",
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                "name": "https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745"
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                "url": "https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8"
            },
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                "url": "https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c"
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                "name": "https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5"
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                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65"
            },
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                "url": "https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc"
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                "url": "https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6"
            },
            {
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html",
                "refsource": "MISC",
                "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
            },
            {
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html",
                "refsource": "MISC",
                "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
            }
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