CVE-2018-5391
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5391
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-5391.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.14.71-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 4.17.15-1 |
| debian | bullseye | fixed | 4.17.15-1 |
| debian | forky | fixed | 4.17.15-1 |
| debian | sid | fixed | 4.17.15-1 |
| debian | trixie | fixed | 4.17.15-1 |
References
Verify integrity in audit chain (admin only). AS-IS.