CVE-2020-24394

Name: CVE-2020-24394
Creator: NVD / NIST
Published: 2020-08-19T13:15:10.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2020-24394 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.36%

27.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 5.7.8	—
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	16.04	—
Canonical	Ubuntu Linux	18.04	—
Canonical	Ubuntu Linux	20.04	—
Opensuse	Leap	15.1	—
Oracle	Sd-Wan Edge	8.2	—
Starwindsoftware	Starwind Virtual San	v8	Build12533

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.htmlThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254Issue Tracking, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22cf8419f1319ff87ec759d0ebdff4cbafaee832Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200904-0003/Third Party Advisory
https://usn.ubuntu.com/4465-1/Third Party Advisory
https://usn.ubuntu.com/4483-1/Third Party Advisory
https://usn.ubuntu.com/4485-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20210325-0004/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.htmlThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254Issue Tracking, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22cf8419f1319ff87ec759d0ebdff4cbafaee832Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200904-0003/Third Party Advisory
https://usn.ubuntu.com/4465-1/Third Party Advisory
https://usn.ubuntu.com/4483-1/Third Party Advisory
https://usn.ubuntu.com/4485-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20210325-0004/Third Party Advisory

Timeline

Published: Aug 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24394?

How severe is CVE-2020-24394?

CVE-2020-24394 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24394?

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-2020-24394?

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

Scan your code now

Source: NVD / NIST