HOMEVULNERABILITIESCVE-2018-14641
MEDIUM

CVE-2018-14641

CWE-456Published: September 18, 2018· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3 inclusive, which can cause a later system crash in ip_do_fragment(). With certain non-default, but non-rare, configuration of a victim host, an attacker can trigger this crash remotely, thus leading to a remote denial-of-service.

NVD Source

Technical Analysis

CVE-2018-14641 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4
PATCHhttps://seclists.org/oss-sec/2018/q3/248
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4
PATCHhttps://seclists.org/oss-sec/2018/q3/248
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2948
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2948

All References (8)

→
https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641Issue Tracking · Patch
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4Patch · Vendor Advisory
→
https://seclists.org/oss-sec/2018/q3/248Exploit · Mailing List · Patch · Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641Issue Tracking · Patch
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4Patch · Vendor Advisory
→
https://seclists.org/oss-sec/2018/q3/248Exploit · Mailing List · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2018-14641
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-456
CISA KEVNo
Affected1 vendor(s)
PublishedSep 18, 2018

Related CVEs (CWE-456)

CVE-2024-32878
8.8
CVE-2023-20226
7.5
CVE-2021-34703
6.5
CVE-2021-40403
6.3
CVE-2019-3836
5.9
CVE-2024-9780
5.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-14641 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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