CVE-2022-49948 — vt: Clear selection before changing the font
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 fo…
Published: 2025-06-18 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7