CVE-2020-25284

Name: CVE-2020-25284
Creator: NVD / NIST
Published: 2020-09-13T18:15:09.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.1/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2020-25284 is a medium-severity vulnerability rated 4.1/10 on the CVSS scale. The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.

Metrics

CVSS 3.1

4.1/10

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

EPSS Probability

0.31%

22.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.8.9
Debian	Debian Linux	9.0
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.htmlMailing List, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f44d04e696feaf13d192d942c4f14ad2e117065aPatch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
https://twitter.com/grsecurity/status/1304537507560919041Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.htmlMailing List, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f44d04e696feaf13d192d942c4f14ad2e117065aPatch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
https://twitter.com/grsecurity/status/1304537507560919041Third Party Advisory

Timeline

Published: Sep 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25284?

How severe is CVE-2020-25284?

CVE-2020-25284 has a CVSS score of 4.1/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25284?

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-2020-25284?

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

Scan your code now

Source: NVD / NIST