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CVE-2018-5333

37
FAUCET Score

CVE-2018-5333 is a NULL pointer dereference vulnerability in the Linux kernel's Reliable Datagram Sockets (RDS) component, specifically affecting versions through 4.14.13. This flaw occurs when the rds_cmsg_atomic function mishandles page pinning failures or invalid addresses, leading to a system crash. Rated Medium (CVSS 5.5), it allows a local, low-privileged attacker to achieve a denial of service. While not actively exploited in the wild, a Metasploit module exists, indicating readily available exploit code, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.14.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
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:*:*:*

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
7.68%
Probability of exploitation in next 30 days
EPSS Percentile
94.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Metasploit: Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation · Nov 1, 2018
ExploitDB: EDB-47957 · Jan 23, 2020
This CVE's current EPSS score of 0.0768 is in the 100th 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 (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-693.21.1.rt56.607.el6rt
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

Vendor Advisories (1)

redhatCVE-2018-5333Moderate

kernel: Null pointer dereference in rds_atomic_free_op() allowing denial-of-service

Jan 3, 2018

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatchVendor Advisory
packetstormsecurity.com / files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
access.redhat.com / errata/RHSA-2018:0470
Third Party Advisory
github.com / torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/05/msg00000.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3583-1
Third Party Advisory
usn.ubuntu.com / 3583-2
Third Party Advisory
usn.ubuntu.com / 3617-1
Third Party Advisory
usn.ubuntu.com / 3617-2
Third Party Advisory
usn.ubuntu.com / 3617-3
Third Party Advisory
usn.ubuntu.com / 3619-1
Third Party Advisory
usn.ubuntu.com / 3619-2
Third Party Advisory
usn.ubuntu.com / 3632-1
Third Party Advisory
debian.org / security/2018/dsa-4187
Third Party Advisory
securityfocus.com / bid/102510
Third Party AdvisoryVDB Entry