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Fencer Vulns
high 8.8

CVE-2017-14319 json

A grant unmapping issue was discovered in Xen through 4.9.x.

published 2017-09-12 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-5822

cvss
8.8
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 35%
public exploits
0
none known

Summary

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.

Patch / fix

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

debian advisories DEBIAN-CVE-2017-14319

  • xen Ubuntu 14.04 LTS 4.4.2-0ubuntu0.14.04.14
  • xen Ubuntu 16.04 LTS 4.6.5-0ubuntu1.4

ubuntu advisories UBUNTU-CVE-2017-14319

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_21-45.8.1
  • xen SLES for SAP 12 SP2, SLES 12 SP2, SLED 12 SP2 +1 more 4.7.3_04-43.12.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 4.5.5_16-22.28.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_22-61.9.2
  • xen SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 4.9.0_12-3.15.1
  • xen SLES for SAP 12, SLES 12-LTSS 4.4.4_22-22.51.2

suse advisories SUSE-SU-2017:2541-1SUSE-SU-2017:2611-1SUSE-SU-2017:2519-1SUSE-SU-2017:2466-1SUSE-SU-2017:2450-1SUSE-SU-2017:2420-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 4.9.0-r4
  • xen Alpine 3.3 4.6.3-r9
  • xen Alpine 3.4 4.6.3-r11
  • xen Alpine 3.5 4.7.2-r2
  • xen Alpine 3.6 4.8.2-r1

alpine advisories ALPINE-CVE-2017-14319

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-2017-14319 updated cvss 8.8

xen: insufficient grant unmapping checks for x86 PV guests (XSA-234)

  • 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

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

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.