VYPR
Unrated severityNVD Advisory· Published Jun 18, 2025· Updated Dec 23, 2025

vt: Clear selection before changing the font

CVE-2022-49948

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.

Affected products

126

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

8

News mentions

0

No linked articles in our index yet.