5.5

CVE-2017-18216: linux linux_kernel NULL Pointer Dereference

Modified
AliasesUBUNTU-CVE-2017-18216DEBIAN-CVE-2017-18216
Published 05-03-2018Last modified 05-08-2024

Vulnerability summary

CVE-2017-18216 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.47%
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 6 · Related 3
DLA-1369-1DSA-4187-1DSA-4188-1USN-3776-1USN-3776-2USN-3798-1

Timeline

  1. 05-03-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.47% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu21 products
  • linux< 3.13.0-161.211 | < 4.4.0-137.163
  • linux-aws< 4.4.0-1031.34 | < 4.4.0-1069.79
  • linux-azure< 4.15.0-1013.13~16.04.2
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
Debian1 product
  • linux< 4.15.4-1
Linux1 product

3 vendors · 23 products

References

17 links
Show all 17 references