CVE-2022-49948

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.

• linux linux kernel (< 4.9.328) • linux linux kernel (>= 4.10 < 4.14.293) • linux linux kernel (>= 4.15 < 4.19.258) • linux linux kernel (>= 4.20 < 5.4.213) • linux linux kernel (>= 5.5 < 5.10.142) • linux linux kernel (>= 5.11 < 5.15.66) • linux linux kernel (>= 5.16 < 5.19.8) • linux linux kernel 6.0