CVE-2026-98653
KVM: s390: Fix _gaccess_shadow_fault()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
e38c884df92119d96f652d51f82661dd2fc0b885 < 94c43c7df46433ed4d1e18f13770b019ba977bd8 e38c884df92119d96f652d51f82661dd2fc0b885 < faff4c8ff3dbec6d71b89dd281a0d17c4478fa44
Linux / Linux
7.0