CVE-2022-49948

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

18/06/2025

Last modified:

14/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: vt: Clear selection before changing the font When changing the console font with ioctl(KDFONTOP) the new font size can be bigger than the previous font. A previous selection may thus now be outside of the new screen size and thus trigger out-of-bounds accesses to graphics memory if the selection is removed in vc_do_resize(). Prevent such out-of-memory accesses by dropping the selection before the various con_font_set() console handlers are called.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): High

Base Score 3.x

7.10

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.9.328 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.10 (including)	4.14.293 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.258 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.213 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.142 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.66 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.19.8 (excluding)
cpe:2.3:o:linux:linux_kernel:6.0:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.0:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-49948

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools