What is CVE-2023-5158?

CVE-2023-5158 is a medium-severity vulnerability in Linux Kernel, classified under CWE-684. CVSS score: 6.5/10. Published 2023-09-25.

How severe is CVE-2023-5158?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Linux Kernel

CVE-2023-5158

A flaw was found in vringh_kiov_advance in drivers/vhost/vringh.c in the host side of a virtio ring in the Linux Kernel. This issue may result in a denial of service from guest to host via zero length descriptor.

Published 2023-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.7th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-684

References

access.redhat.com/security/cve/CVE-2023-5158 (Third Party Advisory, vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Issue Tracking)

Frequently asked questions

What is CVE-2023-5158?: CVE-2023-5158 is a medium-severity vulnerability in Linux Kernel, classified under CWE-684. CVSS score: 6.5/10. Published 2023-09-25.
How severe is CVE-2023-5158?: Medium severity. CVSS v3 base score is 6.5 out of 10.