CVE Intelligence
CISA KEV High Memory corruption exploit reference

CVE-2018-14634 — Linux Kernel Integer Overflow Vulnerability

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel versions 2.6.x, 3.10.x and 4.14.x are believed to be vulnerable.

Published Sep 25, 2018 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, CVE Program (cve.org) e CISA ADP, NIST National Vulnerability Database, GitHub Security Advisories · CNA: redhat

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Jan 26, 2026 Exploit-DB · 1
How the score was calculated
  • Confirmed exploitation (CISA KEV)+35
  • Public exploit/PoC (exploitdb)+8
  • EPSS 14.7% (30-day exploitation probability)+14
  • Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Confirmed
CISA KEV, listed Jan 26, 2026
EPSS FIRST
14.69%
ahead of 97% of scored CVEs · Oct 14, 2026
Affects
Canonical
Ubuntu Linux and 27 more
CVSS base
7.8
High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Active
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

CISA required action CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal deadline: Feb 16, 2026 — passed 241 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Canonical Ubuntu Linux, F5 Big-ip Access Policy Manager, F5 Big-ip Advanced Firewall Manager…).
  2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
  3. Apply the fixed version or the patch documented under Remediation.
  4. EPSS ahead of 97% of scored CVEs: prioritize it in the patch queue.
  5. Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Canonical Ubuntu Linux version 12.04version 14.04 Vulnerable NIST National Vulnerability Database
F5 Big-ip Access Policy Manager ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Advanced Firewall Manager ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Analytics ≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6≥ 11.2.1 and < 11.6.4 Vulnerable NIST National Vulnerability Database
F5 Big-ip Application Acceleration Manager ≥ 12.1.0 and < 12.1.5≥ 14.1.0 and < 14.1.0.6≥ 14.0.0 and < 14.0.1.1≥ 13.0.0 and < 13.1.1.5≥ 11.2.1 and < 11.6.4 Vulnerable NIST National Vulnerability Database
F5 Big-ip Application Security Manager ≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5 Vulnerable NIST National Vulnerability Database
F5 Big-ip Domain Name System ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Edge Gateway ≥ 14.1.0 and < 14.1.0.6≥ 14.0.0 and < 14.0.1.1≥ 13.0.0 and < 13.1.1.5≥ 12.1.0 and < 12.1.5≥ 11.2.1 and < 11.6.4 Vulnerable NIST National Vulnerability Database
F5 Big-ip Fraud Protection Service ≥ 11.2.1 and < 11.6.4≥ 14.1.0 and < 14.1.0.6≥ 14.0.0 and < 14.0.1.1≥ 13.0.0 and < 13.1.1.5≥ 12.1.0 and < 12.1.5 Vulnerable NIST National Vulnerability Database
F5 Big-ip Global Traffic Manager ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Link Controller ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Local Traffic Manager ≥ 14.0.0 and < 14.0.1.1≥ 13.0.0 and < 13.1.1.5≥ 12.1.0 and < 12.1.5≥ 11.2.1 and < 11.6.4≥ 14.1.0 and < 14.1.0.6 Vulnerable NIST National Vulnerability Database
F5 Big-ip Policy Enforcement Manager ≥ 11.2.1 and < 11.6.4≥ 12.1.0 and < 12.1.5≥ 14.1.0 and < 14.1.0.6≥ 13.0.0 and < 13.1.1.5≥ 14.0.0 and < 14.0.1.1 Vulnerable NIST National Vulnerability Database
F5 Big-ip Webaccelerator ≥ 14.0.0 and < 14.0.1.1≥ 14.1.0 and < 14.1.0.6≥ 13.0.0 and < 13.1.1.5≥ 12.1.0 and < 12.1.5≥ 11.2.1 and < 11.6.4 Vulnerable NIST National Vulnerability Database
F5 Big-iq Centralized Management ≥ 5.0.0 and ≤ 5.4.0≥ 6.0.0 and ≤ 6.0.1≥ 7.0.0 and ≤ 7.1.0version 4.6.0 Vulnerable NIST National Vulnerability Database
F5 Big-iq Cloud And Orchestration version 1.0.0 Vulnerable NIST National Vulnerability Database
F5 Enterprise Manager version 3.1.1 Vulnerable NIST National Vulnerability Database
F5 Iworkflow ≥ 2.2.0 and ≤ 2.3.0 Vulnerable NIST National Vulnerability Database
F5 Traffix Signaling Delivery Controller version 4.4.0≥ 5.0.0 and ≤ 5.1.0 Vulnerable NIST National Vulnerability Database
Linux Linux Kernel ≥ 3.10 and ≤ 3.10.102≥ 2.6.0 and ≤ 2.6.39.4≥ 4.14 and ≤ 4.14.54 Vulnerable NIST National Vulnerability Database
Linux Linux Kernel version 2.6.x, 3.10.x, 4.14.x Vulnerable CVE Program (cve.org) e CISA ADP
Netapp Snapprotect versions not specified by the source Vulnerable NIST National Vulnerability Database
Palo Alto Networks PAN-OS ≥ 7.1.0 and < 7.1.23≥ 8.0.0 and < 8.0.16≥ 8.1.0 and < 8.1.7 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Desktop version 7.0version 6.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server version 7.0version 6.0 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Aus version 7.6version 6.6version 6.5 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Eus version 7.6version 7.5version 6.7 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Server Tus version 6.6version 7.6 Vulnerable NIST National Vulnerability Database
Red Hat Enterprise Linux Workstation version 6.0version 7.0 Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
7.8 CVSS 3.0 High 1.8 5.9 secalert@redhat.com via NIST National Vulnerability Database
7.8 CVSS 3.0 High 1.8 5.9 nvd@nist.gov via NIST National Vulnerability Database
7.8 CVSS 3.0 High — — GitHub, Inc. via GitHub Security Advisories
7.8 CVSS 3.0 High — — redhat via CVE Program (cve.org) e CISA ADP
7.2 CVSS 2.0 High 3.9 10.0 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-190 · Integer Overflow or Wraparound

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed
Jan 26, 2026
Federal deadline
Feb 16, 2026
passed 241 day(s) ago
Ransomware use
Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Exploit-DB

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 14.69%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
  • Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
  • Hunt retroactively in logs from before Jan 26, 2026 (KEV listing): exploitation may have started earlier.
endpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

  • 2026
  • Fix documented
    Oct 13, 2026 · NIST National Vulnerability Database
  • Affected products added · paloaltonetworks/pan-os, f5/big-ip access policy manager, f5/big-ip advanced firewall manager, f5/big-ip analytics, f5/b
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · Published → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record published
    Oct 13, 2026
  • Affected products added · the linux foundation/kernel
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • CVSS changed · 7.8
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Source status changed · → Published
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Added to CISA KEV (detected)
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • Record created in this database
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • Added to CISA KEV catalog
    Jan 25, 2026 · CISA
  • 2018
  • CVE published
    Sep 25, 2018 · redhat

Source activity

Repeated readings are counted rather than listed.

  • 3× References added · Oct 13, 2026 – Oct 13, 2026
  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

34 on the record

Elsewhere on this site

Canonical
every CVE for this vendor
2026-01
what else CISA listed that month
Memory corruption
same class
CWE-190
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-0320 PAN-OS: Authenticated Admin Command Injection Vulnerability 1d
  • CVE-2026-0318 PAN-OS: Denial of Service (DoS) on Panorama 1d
  • CVE-2026-0319 PAN-OS: Improper Input Handling Vulnerability 1d
  • CVE-2026-0316 PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability 1d
  • CVE-2026-0317 PAN-OS: Denial of Service Vulnerability 1d
  • CVE-2026-0321 PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2018-14634 is "Linux Kernel Integer Overflow Vulnerability", rated High. It affects Ubuntu Linux (Canonical); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 7.8 describes technical severity. EPSS 14.69% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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