cve-2024-38570
Vulnerability from cvelistv5
Published
2024-06-19 13:35
Modified
2024-11-05 09:30
Severity ?
Summary
gfs2: Fix potential glock use-after-free on unmount
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8caPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8caPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0Patch
Impacted products
Vendor Product Version
Linux Linux Version: 3.8
Show details on NVD website

To clipboard 

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This didn\u0027t take the bast callbacks for\\nasynchronous lock contention notifications into account, which remain\\nactive until until a lock is unlocked or its lockspace is released.\\n\\nTo prevent those callbacks from accessing deallocated objects, put the\\nglocks that should not be unlocked on the sd_dead_glocks list, release\\nthe lockspace, and only then free those glocks.\\n\\nAs an additional measure, ignore unexpected ast and bast callbacks if\\nthe receiving glock is dead.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: gfs2: soluciona el posible use-after-free de glock al desmontar Cuando se libera un espacio de bloqueo de DLM y todav\u00eda hay bloqueos en ese espacio de bloqueo, DLM desbloquear\u00e1 esos bloqueos autom\u00e1ticamente. El commit fb6791d100d1b comenz\u00f3 a explotar este comportamiento para acelerar el desmontaje del sistema de archivos: gfs2 simplemente liberar\u00eda las glocks que no quer\u00eda desbloquear y luego liberar\u00eda el espacio de bloqueo. Esto no tuvo en cuenta las devoluciones de llamada de bast para notificaciones de contenci\u00f3n de bloqueo asincr\u00f3nicas, que permanecen activas hasta que se desbloquea un bloqueo o se libera su espacio de bloqueo. Para evitar que esas devoluciones de llamada accedan a objetos desasignados, coloque las glocks que no deben desbloquearse en la lista sd_dead_glocks, libere el espacio de bloqueo y solo entonces libere esas glocks. 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}


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