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Fencer Intel
medium 6.5

CVE-2017-14318 json

An issue was discovered in Xen 4.5.x through 4.9.x.

published 9y ago modified 4mo ago also EUVD-2017-5821

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 29%
public exploits
0
none known

Summary

An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct.

Patch / fix

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

debian advisories DEBIAN-CVE-2017-14318

  • xen Ubuntu 16.04 LTS 4.6.5-0ubuntu1.4

ubuntu advisories UBUNTU-CVE-2017-14318

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 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 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 4.9.0_12-3.15.1

suse advisories SUSE-SU-2017:2519-1SUSE-SU-2017:2466-1SUSE-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-2017-14318

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

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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-2017-14318 updated cvss 8.5

xen: Missing check for grant table (XSA-232)

  • 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

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

References

Sources

Fencer Intel 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.