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CVE-2018-14734

24
FAUCET Score

CVE-2018-14734 is a use-after-free vulnerability in the Linux kernel's Infiniband core (ucma.c) affecting versions through 4.17.11, including various Canonical and Debian distributions. This flaw allows a local attacker to trigger a denial of service. With a CVSS score of 7.8 (High), it presents a significant risk due to its potential for high impact on confidentiality, integrity, and availability, despite requiring local access and low privileges. Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in the KEV catalog, and there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.17.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
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:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 83rd percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1062.rt56.1022.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.7.1.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1062.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2018-14734Moderate

kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c

Jun 1, 2018

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
access.redhat.com / errata/RHSA-2019:0831
access.redhat.com / errata/RHSA-2019:2029
access.redhat.com / errata/RHSA-2019:2043
github.com / torvalds/linux/commit/cb2595c1393b4a5211534e6f0a0fbad369e21ad8
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/10/msg00003.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3797-1
Third Party Advisory
usn.ubuntu.com / 3797-2
Third Party Advisory
usn.ubuntu.com / 3847-1
Third Party Advisory
usn.ubuntu.com / 3847-2
Third Party Advisory
usn.ubuntu.com / 3847-3
Third Party Advisory
usn.ubuntu.com / 3849-1
Third Party Advisory
usn.ubuntu.com / 3849-2
Third Party Advisory
debian.org / security/2018/dsa-4308
Third Party Advisory