CVE-2017-17563
HIGH7.8EPSS 0.06%xen - security update
Published: 12/12/2017Modified: 11/19/2025
Also known as:ALPINE-CVE-2017-17563DEBIAN-CVE-2017-17563
Description
An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.
Affected packages (3)
- Alpine/xenfrom 0, < 4.6.6-r3
- Debian/xenfrom 0, < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
- Debian/xenfrom 0, < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |