9.4

CVE-2017-10917: xen NULL Pointer Dereference

Modified
AliasesALPINE-CVE-2017-10917UBUNTU-CVE-2017-10917DEBIAN-CVE-2017-10917
Published 05-07-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-10917 is a high (CVSS 9.4) NULL Pointer Dereference vulnerability in xen. EPSS estimates a 2.57% chance of exploitation in the next 30 days, higher than 85.1% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.4/10
010
High · v2.0 (NVD)
EPSS score
2.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
DSA-3969-1SUSE-SU-2017:1795-1SUSE-SU-2017:1812-1

Timeline

  1. 05-07-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

2.57%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.57% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • xen< 4.9.0-r0 | < 4.6.6-r0 | < 4.7.3-r0 | < 4.8.2-r0
Debian1 product
  • xen< 4.8.1-1+deb9u3
Ubuntu1 product
  • xen< 4.4.2-0ubuntu0.14.04.12 | < 4.6.5-0ubuntu1.2
Xen1 product

4 vendors · 4 products

References

9 links