It looks like new libvmGuestLib.so have memory leak in VMGuestLib_UpdateInfo(). Both library from Guest SDK and from VMware Tools affected. Last worked version that I tried is 9.4.10-2092844, first bad that I tried is 9.10.0-2476743. Please see attached C++ sample (extracted from real project). If run it call VMGuestLib_UpdateInfo() and mallinfo() then print heap usage. Every call of affected library versions increasing heap usage on 24 bytes.
I would be very happy if it will be fixed in the next GuestSDK/VMwareTools releases. Now I'm locked on old version but I've already discovered another heap related issues with it: unfortunately old version have rare crash during VM migration because free of invalid pointer (see attached text file; have no idea is new version affected, I saw it on old only). So, now I have no stable version.