VULNERABILITY INTELLIGENCE

CVE-2021-20261

CVSS score6.4 MEDIUM

EPSS probability0.23%

CISA KEVNot currently listed

Published2021-03-11

Last modified2026-06-17

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

Description

A race condition was found in the Linux kernels implementation of the floppy disk drive controller driver software. The impact of this issue is lessened by the fact that the default permissions on the floppy device (/dev/fd0) are restricted to root. If the permissions on the device have changed the impact changes greatly. In the default configuration root (or equivalent) permissions are required to attack this flaw.

Weakness classification

secalert@redhat.com: CWE-362

Primary references

secalert@redhat.com — Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com — Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch, Vendor Advisory