Vulnerability

CVE-2018-14634

High· 7.8KEVEXPLOITCVSS7.8EPSS15%

.rules3/5

Linux Kernel Integer Overflow Vulnerability

Linux Kernel contains an integer overflow vulnerability in the create_elf_tables() function which could allow an unprivileged local user with access to SUID (or otherwise privileged) binary to escalate their privileges on the system.

Threat signal

96/100

Severe

Severity

high

CVSS

7.8

EPSS

15%

Active

KEV

CISA KEV — actively exploited

120d overdue

AffectedLinux — Kernel

Added to KEV

2026-01-26

Federal patch due (BOD 22-01)

2026-02-16

Required action (CISA verbatim)

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

Vendor advisory + references

CISA description: “Linux Kernel contains an integer overflow vulnerability in the create_elf_tables() function which could allow an unprivileged local user with access to SUID (or otherwise privileged) binary to escalate their privileges on the system.”

CVSS

v3.0Open in FIRST calculator →

7.8/ 10HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLocalRequires local access — shell, console, or local app.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

14.8%

probability of exploitation in next 30 days

p96

higher than 96% of all CVEs

6-day trend↓ 5.8pp

Above the FIRST 'patch on a priority schedule' threshold.

Vendor VEX

No VEX statements published for CVE-2018-14634. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: no
impact: total
mission: support

Lifecycle

2026-01-26Added to CISA KEVransomware: Unknown
2026-01-26Public exploit observedexploitdb
2026-01-26Published
2026-02-16Federal patch due (BOD 22-01)
2026-06-15Last modified1 source

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.