{
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    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47579",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-24T15:11:00.730Z",
        "datePublished": "2024-06-19T14:53:46.750Z",
        "dateUpdated": "2024-09-11T17:34:52.936Z"
    },
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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                "dateUpdated": "2024-06-19T14:53:46.750Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\novl: fix warning in ovl_create_real()\n\nSyzbot triggered the following warning in ovl_workdir_create() ->\novl_create_real():\n\n\tif (!err && WARN_ON(!newdentry->d_inode)) {\n\nThe reason is that the cgroup2 filesystem returns from mkdir without\ninstantiating the new dentry.\n\nWeird filesystems such as this will be rejected by overlayfs at a later\nstage during setup, but to prevent such a warning, call ovl_mkdir_real()\ndirectly from ovl_workdir_create() and reject this case early."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/overlayfs/dir.c",
                        "fs/overlayfs/overlayfs.h",
                        "fs/overlayfs/super.c"
                    ],
                    "versions": [
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "445d2dc63e58",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "f9f300a92297",
                            "status": "affected",
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                        {
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                            "status": "affected",
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                        {
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                            "lessThan": "1f5573cfe7a7",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/overlayfs/dir.c",
                        "fs/overlayfs/overlayfs.h",
                        "fs/overlayfs/super.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19.222",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.168",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.88",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.11",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/445d2dc63e5871d218f21b8f62ab29ac72f2e6b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f9f300a92297be8250547347fd52216ef0177ae0"
                },
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                    "url": "https://git.kernel.org/stable/c/6859985a2fbda5d1586bf44538853e1be69e85f7"
                },
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                    "url": "https://git.kernel.org/stable/c/d2ccdd4e4efab06178608a34d7bfb20a54104c02"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c"
                }
            ],
            "title": "ovl: fix warning in ovl_create_real()",
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                "engine": "bippy-a5840b7849dd"
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                "title": "CVE Program Container",
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