GO-2026-4981 Crash when handling long CNAME response in net

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash...

Fedora 32 : exim (2021-89cb264e4d)

The remote Fedora 32 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-89cb264e4d advisory. - Fixed cname handling in TLS certificate verification FEDORA-2021-89cb264e4d Note that Nessus has not tested for this issue but has instead relied only on t...