CVE-2022-49948: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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

• Linux Linux Kernel: before 4.9.328 (fixed in 4.9.328); from 4.10, before 4.14.293 (fixed in 4.14.293); from 4.15, before 4.19.258 (fixed in 4.19.258); from 4.20, before 5.4.213 (fixed in 5.4.213); from 5.5, before 5.10.142 (fixed in 5.10.142); from 5.11, before 5.15.66 (fixed in 5.15.66); …

Published 2025-06-18. Last modified 2026-08-04.