VULNERABILITY INTELLIGENCE

CVE-2020-25656

CVSS score4.1 MEDIUM

EPSS probability0.44%

CISA KEVNot currently listed

Published2020-12-02

Last modified2026-06-17

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

Description

A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

Weakness classification

CWE-416: Use After Free

Primary references

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