CVE-2026-23432
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 3, 2026
First seenApr 3, 2026
How to fix
Update
- linux linux_kernel6.19.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.19.1 ≤ v < 6.19.10, 6.19, 7.0 | 6.19.10 |
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