Incorrect Permission Assignment for Critical Resource Affecting kernel-rt package, versions <0:4.18.0-305.rt7.72.el8
Threat Intelligence
EPSS
0.04% (6th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRT-2104548
- published 26 Jul 2021
- disclosed 13 Sep 2020
Introduced: 13 Sep 2020
CVE-2020-25284 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt to version 0:4.18.0-305.rt7.72.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2020-25284
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f44d04e696feaf13d192d942c4f14ad2e117065a
- https://twitter.com/grsecurity/status/1304537507560919041
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://access.redhat.com/errata/RHSA-2021:1739
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
CVSS Scores
version 3.1