{
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        "cveId": "CVE-2021-47342",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-21T14:28:16.979Z",
        "datePublished": "2024-05-21T14:35:49.643Z",
        "dateUpdated": "2026-05-23T15:19:46.440Z"
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                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix possible UAF when remounting r/o a mmp-protected file system\n\nAfter commit 618f003199c6 (\"ext4: fix memory leak in\next4_fill_super\"), after the file system is remounted read-only, there\nis a race where the kmmpd thread can exit, causing sbi->s_mmp_tsk to\npoint at freed memory, which the call to ext4_stop_mmpd() can trip\nover.\n\nFix this by only allowing kmmpd() to exit when it is stopped via\next4_stop_mmpd().\n\nBug-Report-Link: <20210629143603.2166962-1-yebin10@huawei.com>"
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            ],
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                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
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                        "fs/ext4/super.c"
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                    "programFiles": [
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                    "url": "https://git.kernel.org/stable/c/61bb4a1c417e5b95d9edb4f887f131de32e419cb"
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            "title": "ext4: fix possible UAF when remounting r/o a mmp-protected file system",
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