CVE-2018-20961

Name: CVE-2018-20961
Creator: NVD / NIST
Published: 2019-08-07T15:15:11.97+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.34%

Last modified Jun 17, 2026

CVE-2018-20961 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In the Linux kernel before 4.16.4, a double free vulnerability in the f_midi_set_alt function of drivers/usb/gadget/function/f_midi.c in the f_midi driver may allow attackers to cause a denial of service or possibly have unspecified other impact.. EPSS estimates a 6.34% chance of exploitation in the next 30 days.

Description

In the Linux kernel before 4.16.4, a double free vulnerability in the f_midi_set_alt function of drivers/usb/gadget/function/f_midi.c in the f_midi driver may allow attackers to cause a denial of service or possibly have unspecified other impact.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

6.34%

92.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-415

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.4, < 4.4.190
Linux	Linux Kernel	>= 4.5, < 4.9.96
Linux	Linux Kernel	>= 4.10, < 4.14.36
Linux	Linux Kernel	>= 4.15.0, < 4.16.4

References

http://packetstormsecurity.com/files/154228/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.htmlThird Party Advisory, VDB Entry
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.4Release Notes, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7fafcfdf6377b18b2a726ea554d6e593ba44349fExploit, Mailing List, Vendor Advisory
https://github.com/torvalds/linux/commit/7fafcfdf6377b18b2a726ea554d6e593ba44349fPatch, Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/48Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190905-0002/Third Party Advisory
https://support.f5.com/csp/article/K58502654Third Party Advisory
https://support.f5.com/csp/article/K58502654?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4145-1/Third Party Advisory
http://packetstormsecurity.com/files/154228/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.htmlThird Party Advisory, VDB Entry
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.4Release Notes, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7fafcfdf6377b18b2a726ea554d6e593ba44349fExploit, Mailing List, Vendor Advisory
https://github.com/torvalds/linux/commit/7fafcfdf6377b18b2a726ea554d6e593ba44349fPatch, Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/48Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190905-0002/Third Party Advisory
https://support.f5.com/csp/article/K58502654Third Party Advisory
https://support.f5.com/csp/article/K58502654?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4145-1/Third Party Advisory

Timeline

Published: Aug 7, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20961?

How severe is CVE-2018-20961?

CVE-2018-20961 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.34% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20961?

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-2018-20961?

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

Scan your code now

Source: NVD / NIST