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CVE-2018-10938

23
FAUCET Score

CVE-2018-10938 is a denial-of-service vulnerability in the Linux kernel (versions v4.0-rc1 through v4.13-rc4) affecting Canonical and Debian distributions. A remotely sent, crafted network packet can trigger an infinite loop in the cipso_v4_optptr() function, leading to system unavailability. This medium-severity flaw (CVSS 5.9) requires a specific, non-default configuration of LSM and NetLabel to be exploitable, increasing attack complexity. There is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.0:rc1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.0:rc2:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.0:rc3:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.0:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.00%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0500 is in the 89th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2018-10938Moderate

kernel: infinite loop in net/ipv4/cipso_ipv4.c:cipso_v4_optptr() allows for DoS

Aug 27, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
seclists.org / oss-sec/2018/q3/179
Mailing ListThird Party Advisory
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
Mailing ListThird 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
debian.org / security/2018/dsa-4308
Third Party Advisory
securityfocus.com / bid/105154
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041569
Third Party AdvisoryVDB Entry