CVE-2026-98653
- Source
- https://cve.org/CVERecord?id=CVE-2026-98653
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98653.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98653
- Downstream
- Published
- 2026-10-18T15:20:24Z
- Modified
- 2026-10-19T02:47:04Z
- Summary
- KVM: s390: Fix _gaccess_shadow_fault()
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98653.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/94c43c7df46433ed4d1e18f13770b019ba977bd8
- https://git.kernel.org/stable/c/faff4c8ff3dbec6d71b89dd281a0d17c4478fa44
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98653.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98653