Kusukela ekusetshenzisweni kwekhonsoli yombhalo enikezwe njengengxenye ye-Linux kernel , okunikeza ikhono lokupheqa umbhalo emuva (CONFIG_VGACON_SOFT_SCROLLBACK). Ikhodi isusiwe ngenxa yokuba khona kwamaphutha, okungekho muntu ozowalungisa ngenxa yokungabikho komnakekeli owengamele ukuthuthukiswa kwe-vgacon.
Ehlobo e-vgacon kwembulwa futhi ukuba sengozini (CVE-2020-14331) okungaholela ekuchichimeni kwebhafa ngenxa yokuntuleka kokuhlola okufanele kokutholakala kwememori etholakalayo kusigcinalwazi sokuskrola. Ukuba sengozini kudonse ukunaka konjiniyela abahlele ukuhlolwa kwe-fuzz kwekhodi ye-vgacon .
Ukuhlola okwengeziwe kwembule ezinye izinkinga ezimbalwa ezifanayo kukhodi ye-vgacon, kanye nezinkinga ekusebenziseni isofthiwe yokuskrola kumshayeli we-fbcon. Ngeshwa, ikhodi eyinkinga sekuyisikhathi eside ihlezi inganakekelwa, mhlawumbe ngenxa yokuthi abathuthukisi bashintshele ekusebenziseni ama-graphical consoles kanye nama-consoles ombhalo awazange asetshenziswe (abantu bayaqhubeka nokusebenzisa i-vgacon ne-fbcon consoles, kodwa bebengeyona i-kernel interface amashumi eminyaka. kanye nezici ezithuthukisiwe ezifana nokuskrola okwakhelwe kumshayeli (Shift+PageUp/PageDown) ngokunokwenzeka zidingeka kancane).
Mayelana nalokhu, uLinus Torvalds unqume ukungazami ukugcina ikhodi engafunwanga, kodwa avele ayisuse. Uma kukhona abasebenzisi abadinga lokhu kusebenza, ikhodi yokusekela ukuskrola kukhonsoli izobuyiselwa ku-kernel ngokushesha nje lapho kutholwa umnakekeli olungele ukuthatha ukunakekelwa kwayo.
Source: opennet.ru