CVE-2018-25020

Name: CVE-2018-25020
Creator: NVD / NIST
Published: 2021-12-08T05:15:07.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2018-25020 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.

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

0.51%

39.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 4.17
Netapp	Cloud Backup	All versions
Netapp	H410c Firmware	All versions
Netapp	H300s Firmware	All versions
Netapp	H500s Firmware	All versions
Netapp	H700s Firmware	All versions
Netapp	H300e Firmware	All versions
Netapp	H500e Firmware	All versions
Netapp	H700e Firmware	All versions
Netapp	H410s Firmware	All versions

References

http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.htmlThird Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cbPatch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211229-0005/Third Party Advisory
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.htmlThird Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cbPatch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211229-0005/Third Party Advisory

Timeline

Published: Dec 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-25020?

How severe is CVE-2018-25020?

CVE-2018-25020 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25020?

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-2018-25020?

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

Scan your code now

Source: NVD / NIST