CVE-2025-37996
High
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort() Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the initialization of the local memcache variable in user_mem_abort() conditional, leaving a codepath where it is used uninitialized via kvm_pgtable_stage2_map(). This can fail on any path that requires a stage-2 allocation without transition via a permission fault or dirty logging. Fix this by making sure that memcache is always valid.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedMay 29, 2025
First seenMay 29, 2025
How to fix
Update
- linux linux_kernel6.14.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.14 ≤ v < 6.14.7, 6.15 | 6.14.7 |
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