CVE-2018-14641: linux linux_kernel Missing Initialization of a Variable
Vulnerability summary
CVE-2018-14641 is a high (CVSS 7.1) Missing Initialization of a Variable vulnerability in linux linux_kernel. EPSS estimates a 2.86% chance of exploitation in the next 30 days, higher than 86.7% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.5, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 1Timeline
- 18-09-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
2.86%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.86% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (seclists.org)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-456Missing Initialization of a VariableThe product does not initialize critical variables.
- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Affected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Linux1 product
- linux_kernel4.19:rc1 | 4.19:rc2 | 4.19:rc3
The linux foundation1 product
- kernelfrom 4.19-rc1 to 4.19-rc3 inclusive
2 vendors · 2 products