CVE-2026-79610

Description

XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations. Sadly a v2 -> v1 -> v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be allocated again. Hence across the full pair of change the addresses of the status pages may change, rendering stale previously calculated pointers into the status array.

References

https://xenbits.xenproject.org/xsa/advisory-517.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98827

http://xenbits.xen.org/xsa/advisory-517.html

http://www.openwall.com/lists/oss-security/2026/10/13/6

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3