UNKNOWN NVD
CVE-2026-102699
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] 1) XSA-437 (CVE-2023-34321) ad
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
1) XSA-437 (CVE-2023-34321) addressed issues with overflows in
calculations involved in guests flushing caches through
GNTTABOP_cache_flush. Unfortunately the fix there introduced a
calculation which may underflow, resulting in a loop which would - at
least on 64-bit Arm - take excessively long, and which would likely
eventually crash the hypervisor.
This is CVE-2026-102699.
2) GNTTABOP_cache_flush may be issued on memory mapped from another
domain using the grant table interface. However there was no
restriction to disallow the use of invalidate-without-clean against
read-only grant mappings, which may corrupt the granted memory.
This is CVE-2026-102702.
References
- https://xenbits.xenproject.org/xsa/advisory-519.html
- https://www.openwall.com/lists/oss-security/2026/10/13/8
This unknown severity vulnerability was published on 2026-10-13 via NVD.
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