Vulnerability in Linux

CVE-2023-52996

In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) continue; if (type > RTAX_MAX) return false; ... fi_val = fi->fib_metrics->metrics[type - 1]; @type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (16.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-52996: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Linux — versions 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8, 4.14, 0
  • Linux Kernel — versions 6.2

References

Frequently asked questions

What is CVE-2023-52996?
CVE-2023-52996 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-03-27.
How severe is CVE-2023-52996?
Medium severity. CVSS v3 base score is 5.5 out of 10.