Ku-Linux kernel ubungozi (), okukuvumela ukuthi ubangele ukude ukunqatshelwa kwesevisi ngokuthumela amaphakethe e-UDP aklanywe ngokukhethekile (iphakethe lokufa). Inkinga ibangelwa iphutha kusibambi se-udp_gro_receive_segment (net/ipv4/udp_offload.c) ngokusetshenziswa kobuchwepheshe be-GRO (Generic Receive Offload) futhi kungaholela ekonakaleni kokuqukethwe kwezindawo zememori ye-kernel lapho kucutshungulwa amaphakethe e-UDP anoziro padding. (umthwalo ongenalutho).
Inkinga ithinta i-kernel kuphela njengoba ukusekelwa kwe-GRO kwamasokhethi e-UDP kwaba ngoNovemba ngonyaka odlule futhi wakwazi ukungena ekukhululweni kwakamuva okuzinzile kwe-kernel. Ubuchwepheshe be-GRO bukuvumela ukuthi usheshise ukucutshungulwa kwenani elikhulu lamaphakethe angenayo ngokuhlanganisa amaphakethe amaningi abe amabhulokhi amakhulu angadingi ukucutshungulwa okuhlukene kwephakethe ngalinye.
Ku-TCP, inkinga ayenzeki, njengoba le phrothokholi ayisekeli ukuhlanganisa iphakethe ngaphandle kokulayisha.
Ukuba sengozini kuze kube manje kulungisiwe kuphela efomini , isibuyekezo sokulungisa asikakashicilelwa (isibuyekezo sayizolo 5.0.11 silungise ). Kusukela kumakhithi okusabalalisa, i-kernel 5.0 ikwazile ukufakwa kuyo , , , nokunye ukusatshalaliswa okuqhubekayo okubuyekeziwe. , , и inkinga ayithinti.
Inkinga itholwe ngenxa yalokho Isistimu yokuhlola i-fuzzing ezenzakalelayo edalwe i-Google kanye ne-analyzer (KernelAddressSanitizer), okuhloswe ngayo ukuhlonza amaphutha lapho usebenza ngenkumbulo namaqiniso okufinyelela inkumbulo okungalungile, njengokufinyelela izindawo zenkumbulo ezikhululekile nokubeka amakhodi ezindaweni zememori ezingahloselwe ukukhohlisa okunjalo.
Source: opennet.ru