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MEDIUM: 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HDefault status
unaffected
8.0.0 (semver)
affected
Default status
unaffected
Default status
unaffected
Default status
unaffected
Default status
unaffected
Default status
unaffected
Default status
unaffected
Default status
unaffected
Description
An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.
Problem types
Product status
8.0.0 (semver)
Timeline
| 2026-01-12: | Reported to Red Hat. |
| 2026-01-09: | Made public. |
References
access.redhat.com/security/cve/CVE-2026-0665
bugzilla.redhat.com/show_bug.cgi?id=2428640 (RHBZ#2428640)