CVE-2023-3161

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2023-06-12. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
10.9%
KEV
Not listed

Published

June 12, 2023

Last Modified

March 11, 2025

References (4)

Vendor Advisories for CVE-2023-3161(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-headers-5.4.0-1024-xilinx-zynqmp (5.4.0-1024.28) @ focal2026-05-23ubuntu
ubuntulinux-image-lowlatency (4.4.0.243.249) @ xenial2026-05-23ubuntu
ubuntulinux-tools-iot (5.4.0.1017.15) @ focal2026-05-23ubuntu
redhatkernel-0:4.18.0-372.87.1.el8_62024-01-25redhat
redhatkernel-0:4.18.0-513.5.1.el8_92023-11-14redhat
redhatkernel-rt-0:4.18.0-513.5.1.rt7.307.el8_92023-11-14redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
redhatkernel-rt-0:5.14.0-70.75.1.rt21.146.el9_02023-10-10redhat
redhatkernel-0:5.14.0-70.75.1.el9_02023-10-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-07-22 23:09 UTCEG score recompute
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Frequently asked(5)

What is CVE-2023-3161?
CVE-2023-3161 is a medium vulnerability published on June 12, 2023. A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbconsetfont, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.
When was CVE-2023-3161 disclosed?
CVE-2023-3161 was first published in the National Vulnerability Database on June 12, 2023, with the most recent update on March 11, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-3161 actively exploited?
CVE-2023-3161 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-3161?
CVE-2023-3161 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2023-3161?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-3161, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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