CVE-2026-72293: KVM: s390: vsie: Add missing radix_tree_preload() in _gaccess_shadow_fault()

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: Add missing radix_tree_preload() in _gaccess_shadow_fault() Add missing radix_tree_preload() in _gaccess_shadow_fault() to guarantee forward progress. The core of _gaccess_shadow_fault() has been split into ___gaccess_shadow_fault() in order to simplify locking.

Affected products

Linux kernel: 7.0 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/0c3d4ca328e661cb4eda3bb344ea17e4b6a63171
https://git.kernel.org/stable/c/668e70cc545e2659f3c4adad20a0883533042473

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