CVE-2026-23558

Description

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.

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Produits concernés

• Xen
• Xen xen

Scores CVSS

Faiblesses (CWE)

• CWE-362

Références

• https://xenbits.xenproject.org/xsa/advisory-486.html MitigationPatchVendor Advisory
• http://www.openwall.com/lists/oss-security/2026/04/28/13 Mailing ListMitigationPatchThird Party Advisory
• http://xenbits.xen.org/xsa/advisory-486.html MitigationPatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories