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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
In the Linux kernel, the following vulnerability has been resolved:
mshv: Fix use-after-free in mshv_map_user_memory error path
In the error path of mshv_map_user_memory(), calling vfree() directly on
the region leaves the MMU notifier registered. When userspace later unmaps
the memory, the notifier fires and accesses the freed region, causing a
use-after-free and potential kernel panic.
Replace vfree() with mshv_partition_put() to properly unregister
the MMU notifier before freeing the region.
Metrics
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Title: Linux, Description: En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:
mshv: Corrección de uso después de liberación en la ruta de error de mshv_map_user_memory
En la ruta de error de mshv_map_user_memory(), llamar a vfree() directamente sobre la región deja el notificador de MMU registrado. Cuando el espacio de usuario (userspace) desmapea la memoria más tarde, el notificador se activa y accede a la región liberada, causando un uso después de liberación y un potencial pánico del kernel.
Reemplace vfree() con mshv_partition_put() para anular correctamente el registro del notificador de MMU antes de liberar la región.
OR
*cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19.1 up to (excluding) 6.19.10
New CVE Received from kernel.org4/03/2026 12:16:24 PM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
mshv: Fix use-after-free in mshv_map_user_memory error path
In the error path of mshv_map_user_memory(), calling vfree() directly on
the region leaves the MMU notifier registered. When userspace later unmaps
the memory, the notifier fires and accesses the freed region, causing a
use-after-free and potential kernel panic.
Replace vfree() with mshv_partition_put() to properly unregister
the MMU notifier before freeing the region.