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Fencer Vulns
high 8.8

CVE-2017-15595 json

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (unbounded recursion, stack consum…

published 2017-10-18 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7047

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
1
Exploit-DB

Summary

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking.

Patch / fix

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

debian advisories DEBIAN-CVE-2017-15595

  • xen Ubuntu 18.04 LTS 4.9.2-0ubuntu1

ubuntu advisories UBUNTU-CVE-2017-15595

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 11 SP3-LTSS, SLE Point of Sale 11 SP3 4.2.5_21-45.19.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_28-61.23.2
  • xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 4.5.5_24-22.43.1
  • xen SLES for SAP 12 SP2, SLES 12 SP2, SLED 12 SP2 +1 more 4.7.4_06-43.24.1
  • xen SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 4.9.1_08-3.26.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_26-61.17.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 4.5.5_20-22.36.3
  • xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 4.2.5_21-45.16.1

suse advisories SUSE-SU-2018:0678-1SUSE-SU-2018:0638-1SUSE-SU-2018:0609-1SUSE-SU-2018:0601-1SUSE-SU-2018:0472-1SUSE-SU-2018:0438-1

  • 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-2017-15595

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-2017-15595 updated cvss 6.8

xen: Unlimited recursion in linear pagetable de-typing (XSA-240)

  • Red Hat Enterprise Linux 5 xen
    affected: no fix planned “Will not fix”

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

Timeline

  1. First public exploit (EDB-43014)
  2. Published

Exploit prediction

1.56% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-43014 Xen - Pagetable De-typing Unbounded Recursion dos, 2017-10-18

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.