CVE-2026-79610grant-table: double version change race
Updated under an hour ago ()
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It affects Xen. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- XEN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Xen Xen xen:xen (from the name) | consult Xen advisory XSA-517 status unknown | CNA record |
References
- https://xenbits.xenproject.org/xsa/advisory-517.html
- http://www.openwall.com/lists/oss-security/2026/10/13/6
- http://xenbits.xen.org/xsa/advisory-517.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.