CVE-2018-5391
linux - security update
7.5
HIGH
CVSS 3.1
EPSS 24.1%
Description
The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size.
How to fix CVE-2018-5391
To remediate CVE-2018-5391, upgrade the affected package to a fixed version below.
- —upgrade to 4.17.15-1 or later
- —upgrade to 4.9.110-3+deb9u2 or later
Is CVE-2018-5391 being exploited?
Moderate — EPSS is 24.1%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 4.17.15-1
- from 0, < 4.9.110-3+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |