CVE-2021-3600

Name: CVE-2021-3600
Creator: NVD / NIST
Published: 2024-01-08T19:15:08.47+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2021-3600 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.28%

19.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 4.14.115, < 4.14.308	—
Linux	Linux Kernel	>= 4.15, < 4.19.206	—
Linux	Linux Kernel	>= 4.20, < 5.4.98	—
Linux	Linux Kernel	>= 5.5, < 5.10.16	—
Linux	Linux Kernel	5.11	Rc1
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	16.04	—
Canonical	Ubuntu Linux	18.04	—
Fedoraproject	Fedora	34	—
Redhat	Enterprise Linux	8.0	—

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3600Product
https://git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90Mailing List, Patch, Vendor Advisory
https://ubuntu.com/security/notices/USN-5003-1Third Party Advisory
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3600Product
https://git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90Mailing List, Patch, Vendor Advisory
https://ubuntu.com/security/notices/USN-5003-1Third Party Advisory

Timeline

Published: Jan 8, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3600?

How severe is CVE-2021-3600?

CVE-2021-3600 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3600?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3600?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST