CVE-2022-49948

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