2024-07-14 02:06:08 +00:00

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{
"id": "CVE-2021-47342",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-21T15:15:20.923",
"lastModified": "2024-05-21T16:54:26.047",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"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>"
},
{
"lang": "es",
"value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: corrige posible UAF al remontar el sistema de archivos protegido por r/oa mmp. Despu\u00e9s del commit 618f003199c6 (\"ext4: corrige la p\u00e9rdida de memoria en ext4_fill_super\"), despu\u00e9s de que se vuelve a montar el sistema de archivos solo que hay una ejecuci\u00f3n donde el hilo kmmpd puede salir, causando que sbi-&gt;s_mmp_tsk apunte a la memoria liberada, con la que la llamada a ext4_stop_mmpd() puede tropezar. Solucione este problema permitiendo que kmmpd() salga solo cuando se detiene a trav\u00e9s de ext4_stop_mmpd(). Enlace de informe de error: &lt;20210629143603.2166962-1-yebin10@huawei.com&gt;"
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/61bb4a1c417e5b95d9edb4f887f131de32e419cb",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7ed572cdf11081f8f9e07abd4bea56a3f2c4edbd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b663890d854403e566169f7e90aed5cd6ff64f6b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}