UNKNOWN NVD
CVE-2026-98653
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix _gaccess_shadow_fault() In some circumstances, it is possible that the page
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390: Fix _gaccess_shadow_fault()
In some circumstances, it is possible that the page of nested guest
memory that is being shadowed is not present at all in the parent guest
gmap. dat_entry_walk() will not find any leaf entry and return with
-ENOENT, which will erroneously be propagated all the way to userspace.
Fix by manually calling gmap_link() on the memory of the nested guest
that is being shadowed if the mapping was not already present.
References
- https://git.kernel.org/stable/c/94c43c7df46433ed4d1e18f13770b019ba977bd8
- https://git.kernel.org/stable/c/faff4c8ff3dbec6d71b89dd281a0d17c4478fa44
This unknown severity vulnerability was published on 2026-10-18 via NVD.
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