CVE & CISA-KEV Catalog

CVE-2023-3161

MEDIUM
5.5
CVSS v3
NVD

Description

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.

How to fix

Remediation Available
bpftoolAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
bpftool-debuginfoAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernelAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-debuginfoAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-debuginfo-common-aarch64Amazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
kernel-debuginfo-common-x86_64Amazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
kernel-develAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-headersAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-libbpfAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-libbpf-develAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-libbpf-staticAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-livepatch-4.14.309-231.529Amazon
Fixed in:0:1.0-0.amzn2
kernel-livepatch-6.1.12-17.42Amazon
Fixed in:0:1.0-0.amzn2023
Fixed in:0:1.0-0.amzn2023
kernel-toolsAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-tools-debuginfoAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
kernel-tools-develAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
perfAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
perf-debuginfoAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
python-perfAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
python-perf-debuginfoAmazon
Fixed in:0:4.14.309-231.529.amzn2
Fixed in:0:4.14.309-231.529.amzn2
python3-perfAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
python3-perf-debuginfoAmazon
Fixed in:0:6.1.12-17.42.amzn2023
Fixed in:0:6.1.12-17.42.amzn2023
linuxDebian
Fixed in:6.1.11-1CVE-2023-3161
Fixed in:6.1.11-1CVE-2023-3161
Fixed in:6.1.11-1CVE-2023-3161
bpftoolRocky
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
bpftoolRed Hat / RHEL
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
bpftool-debuginfoRocky
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
bpftool-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
kernelRed Hat / RHEL
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
kernelRocky
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-372.87.1.el8_6RHSA-2024:0412
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
Fixed in:0:4.18.0-513.5.1.el8_9RHSA-2023:7077
kernel-64kRocky
Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.21%probability of exploitation in 30 days
11thpercentile

Low risk: more likely to be exploited than 11% of all known CVEs.

References

Related Vulnerabilities

Other CWE-1335 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2016-9842High8.85.2%-Fix
CVE-2026-4426Medium6.50.3%-Fix
CVE-2026-5072Medium6.50.3%--
CVE-2023-52810High7.80.3%-Fix
CVE-2025-32029Medium6.90.2%--

Common questions

How do I fix CVE-2023-3161?

Published advisories record a fix for 203 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-3161 being actively exploited?

Not that we know of. CVE-2023-3161 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.21% is the estimated probability that it will be exploited in the next 30 days. That is higher than 11% of all scored CVEs.

How severe is CVE-2023-3161?

CVE-2023-3161 has a CVSS v3 base score of 5.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-3161 affect?

Published advisories record a fix for bpftool (Amazon), bpftool-debuginfo (Amazon), kernel (Amazon), kernel-debuginfo (Amazon), and 199 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-3161
CVE-2023-3161 severity badge

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.