DEBIAN-CVE-2017-17563

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2017-17563
Published: 12 Dec 2017, 23:29
Last modified:28 Apr 2026, 20:17

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Dec 2017, 23:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:17
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•HIGH•Score: 7.8CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Systems

  • debian•xen

    < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5

References (1)