Download GLIBC mais recente

wget http://www.vuln.cn/wp-content/uploads/2019/08/libstdc.so_.6.0.26.zip
unzip libstdc.so_.6.0.26.zip
cp libstdc++.so.6.0.26 /usr/lib64

Atualizar GLIBC

cd /usr/lib64
rm libstdc++.so.6
ln -s libstdc++.so.6.0.26 libstdc++.so.6

Instalar dotnet8 manualmente

cd /root
yum install krb5-libs libicu openssl-libs zlib
wget https://dot.net/v1/dotnet-install.sh -O dotnet-install.sh
chmod +x dotnet-install.sh
./dotnet-install.sh --install-dir /usr/share/dotnet --channel 8.0 --version latest --runtime aspnetcore
export PATH=$PATH:/root/.dotnet

Conferir instalação

dotnet --info