8.1

CVE-2026-42488

x86: mismatched mapcache metadata

Some shadow paging errors paths will switch the page-tables without
updating the currently running vCPU reference.  This causes a mismatch
between the loaded page-tables and the mapcache metadata which can lead
to corruption of the mapcache.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerXen
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Produkt Xen
Default Statusunknown
Version consult Xen advisory XSA-494
Status unknown
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.35% 0.271
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

https://xenbits.xenproject.org/xsa/advisory-494.html
http://www.openwall.com/lists/oss-security/2026/06/09/14
http://xenbits.xen.org/xsa/advisory-494.html