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.

Related CVEs

CVE-2018-5391

Key Information

GHSA ID

GHSA-p6x5-xg7h-fj5h

Published

May 14, 2022 1:18 AM

Last Modified

May 14, 2022 1:18 AM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: June 13, 2025 6:24 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.