{"id":"CVE-2026-98653","published":"2026-10-18T16:17:18.580","lastModified":"2026-10-19T10:19:29.790","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix _gaccess_shadow_fault()\n\nIn some circumstances, it is possible that the page of nested guest\nmemory that is being shadowed is not present at all in the parent guest\ngmap. dat_entry_walk() will not find any leaf entry and return with\n-ENOENT, which will erroneously be propagated all the way to userspace.\n\nFix by manually calling gmap_link() on the memory of the nested guest\nthat is being shadowed if the mapping was not already present.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/94c43c7df46433ed4d1e18f13770b019ba977bd8","tags":[]},{"url":"https://git.kernel.org/stable/c/faff4c8ff3dbec6d71b89dd281a0d17c4478fa44","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}