{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47458",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: mount fails with buffer overflow in strlen\n\nStarting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an\nocfs2 filesystem with either o2cb or pcmk cluster stack fails with the\ntrace below.  Problem seems to be that strings for cluster stack and\ncluster name are not guaranteed to be null terminated in the disk\nrepresentation, while strlcpy assumes that the source string is always\nnull terminated.  This causes a read outside of the source string\ntriggering the buffer overflow detection.\n\n  detected buffer overflow in strlen\n  ------------[ cut here ]------------\n  kernel BUG at lib/string.c:1149!\n  invalid opcode: 0000 [#1] SMP PTI\n  CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1\n    Debian 5.14.6-2\n  RIP: 0010:fortify_panic+0xf/0x11\n  ...\n  Call Trace:\n   ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2]\n   ocfs2_fill_super+0x359/0x19b0 [ocfs2]\n   mount_bdev+0x185/0x1b0\n   legacy_get_tree+0x27/0x40\n   vfs_get_tree+0x25/0xb0\n   path_mount+0x454/0xa20\n   __x64_sys_mount+0x103/0x140\n   do_syscall_64+0x3b/0xc0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae"
            }
        ]
    },
    "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": "ac011cb3ff7a"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.4.290",
                                                        "lessThanOrEqual": "4.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.9.288",
                                                        "lessThanOrEqual": "4.9.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.14.253",
                                                        "lessThanOrEqual": "4.14.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.214",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.156",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.76",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.14.15",
                                                        "lessThanOrEqual": "5.14.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb"
            },
            {
                "url": "https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e"
            },
            {
                "url": "https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498"
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                "url": "https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1"
            },
            {
                "url": "https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c"
            },
            {
                "url": "https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad"
            },
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                "url": "https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f"
            },
            {
                "url": "https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc"
            }
        ]
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    "generator": {
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}