CVE-2022-49220
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
dax: make sure inodes are flushed before destroy cache
A bug can be triggered by following command
$ modprobe nd_pmem && modprobe -r nd_pmem
This is caused by dax_fs_exit() not flushing inodes before destroy cache. To fix this issue, call rcu_barrier() before destroy cache.
Detalles técnicos trazas, registros y código del informe original
[ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Call Trace: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.27%
- Percentil entre todas las CVEs puntuadas: 17
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775
- https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86
- https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1
- https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4
- https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759
- https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: make sure inodes are flushed before destroy cache\n\nA bug can be triggered by following command\n\n$ modprobe nd_pmem && modprobe -r nd_pmem\n\n[ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown()\n[ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node)\n[ 10.062433] Call Trace:\n[ 10.062673] dump_stack_lvl+0x34/0x44\n[ 10.062865] slab_err+0x90/0xd0\n[ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0\n[ 10.063848] kmem_cache_destroy+0x4a/0x110\n[ 10.064058] __x64_sys_delete_module+0x265/0x300\n\nThis is caused by dax_fs_exit() not flushing inodes before destroy cache.\nTo fix this issue, call rcu_barrier() before destroy cache."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dax: asegúrese de que los inodos se vacíen antes de destruir la caché. Se puede activar un error con el siguiente comando $ modprobe nd_pmem && modprobe -r nd_pmem [ 10.060014] ERROR dax_cache (no contaminado): objetos restantes en dax_cache en __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Seguimiento de llamadas: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300 Esto se debe a que dax_fs_exit() no vacía los inodos antes de destruir la caché. Para solucionar este problema, llame a rcu_barrier() antes de destruir la caché."
}
],
"lastModified": "2026-06-17T05:17:25.490",
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