CVE-2026-0665

EUVD-2026-7934
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
qemu
bookworm
1:7.2+dfsg-7+deb12u18
fixed
bookworm (security)
1:7.2+dfsg-7+deb12u15
fixed
bullseye
1:5.2+dfsg-11+deb11u3
fixed
bullseye (security)
1:5.2+dfsg-11+deb11u5
fixed
forky
1:10.2.1+ds-1
fixed
sid
1:10.2.2+ds-1
fixed
trixie
1:10.0.8+ds-0+deb13u1
fixed
trixie (security)
vulnerable
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2026-0665
https://bugzilla.redhat.com/show_bug.cgi?id=2428640