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CVE-2017-18216

19
FAUCET Score

CVE-2017-18216 describes a denial-of-service vulnerability in the Linux kernel, specifically affecting versions prior to 4.15, due to a missing mutex in the OCFS2 filesystem's nodemanager. A local attacker can trigger a NULL pointer dereference, leading to system instability. Rated Medium (CVSS 5.5), this vulnerability requires local access and has a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 92nd percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-18216Moderate

kernel: Null pointer dereference in fs/ocfs2/cluster/nodemanager.c allows local users to cause denial of service

Nov 16, 2017

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
github.com / torvalds/linux/commit/853bc26a7ea39e354b9f8889ae7ad1492ffa28d2
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/05/msg00000.html
usn.ubuntu.com / 3776-1
usn.ubuntu.com / 3776-2
usn.ubuntu.com / 3798-1
usn.ubuntu.com / 3798-2
debian.org / security/2018/dsa-4187
debian.org / security/2018/dsa-4188
securityfocus.com / bid/103278
Third Party AdvisoryVDB Entry