CVE-2026-23432 in Kernel
Résumé (Anglaise)
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.
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Responsable
Linux
Réserver
13/01/2026
Divulgation
03/04/2026
Statut
Confirmé
Entrées
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnérabilité | CWE | Exp | Con | CVE |
|---|---|---|---|---|---|
| 355112 | Linux Kernel mshv mshv_map_user_memory buffer overflow | 416 | Non défini | Correctif officiel | CVE-2026-23432 |