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Fencer Vulns
medium 6.5

CVE-2017-15593 json

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference co…

published 2017-10-18 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7045

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.8.2+xsa245-0+deb9u1

debian advisories DEBIAN-CVE-2017-15593

  • xen Ubuntu 18.04 LTS 4.9.2-0ubuntu1

ubuntu advisories UBUNTU-CVE-2017-15593

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 4.5.5_18-22.31.1
  • xen SLES for SAP 12 SP2, SLES 12 SP2, SLED 12 SP2 +1 more 4.7.3_06-43.15.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_24-61.12.1
  • xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 4.2.5_21-45.11.1
  • xen SLES 12-LTSS 4.4.4_24-22.54.1

suse advisories SUSE-SU-2017:2873-1SUSE-SU-2017:2864-1SUSE-SU-2017:2856-1SUSE-SU-2017:2815-1SUSE-SU-2017:2812-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 4.9.0-r6
  • xen Alpine 3.4 4.6.6-r2
  • xen Alpine 3.5 4.7.3-r3
  • xen Alpine 3.6 4.8.2-r3

alpine advisories ALPINE-CVE-2017-15593

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-15593 updated cvss 6.8

xen: page type reference leak on x86 (XSA-242)

  • Red Hat Enterprise Linux 5 xen
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.