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CVE-2018-14617

21
FAUCET Score

CVE-2018-14617 is a NULL pointer dereference vulnerability in the Linux kernel (through version 4.17.10) affecting HFS+ filesystem handling, specifically when opening a malformed hard link on a read-only mounted filesystem without a metadata directory. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and leading to a high availability impact (system panic). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.17.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 93rd percentile among its peer group of 5,765 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

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2018-14617Low

kernel: NULL pointer dereference in fs/hfsplus/dir.c:hfsplus_lookup() when operating on a file in a crafted hfs+ image

Jun 27, 2018

References

bugzilla.kernel.org / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2018/10/msg00003.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3821-1
Third Party Advisory
usn.ubuntu.com / 3821-2
Third Party Advisory
usn.ubuntu.com / 4094-1
usn.ubuntu.com / 4118-1
debian.org / security/2018/dsa-4308
Third Party Advisory
spinics.net / lists/linux-fsdevel/msg130021.html
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/104917
Third Party AdvisoryVDB Entry