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CVE-2018-14609

21
FAUCET Score

CVE-2018-14609 is an invalid pointer dereference vulnerability in the Linux kernel (through version 4.17.10) affecting the Btrfs filesystem. This flaw occurs in the __del_reloc_root() function when mounting a specially crafted Btrfs image, specifically when relocation rb_trees are removed before relocation control is initialized. With a CVSS score of 5.5 (Medium), this vulnerability requires local access and user interaction (mounting the malicious image) to achieve a high impact on availability, potentially leading to system crashes. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

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
2.69%
Probability of exploitation in next 30 days
EPSS Percentile
84.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0269 is in the 94th 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 (2)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2018-14609Low

kernel: Invalid pointer dereference in fs/btrfs/relocation.c:__del_reloc_root() when mounting crafted btrfs image

May 26, 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
patchwork.kernel.org / patch/10500521
PatchThird 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
securityfocus.com / bid/104917
Third Party AdvisoryVDB Entry