DEBIAN-CVE-2020-28974

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2020-28974
Published: 20 Nov 2020, 18:15
Last modified:28 Apr 2026, 20:18

Vulnerability Summary

Overall Risk (default)
low
20/100
CVSS Score
5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Nov 2020, 18:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:18
Last Modified
Vulnerability information updated

Description

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H

Affected Systems

  • debian•linux

    < 5.9.9-1 | < 5.9.9-1 | < 5.9.9-1 | < 5.9.9-1

References (1)