This is a well known (long standing) issue. Documented in the code base in commit eea02be70ee37b845f2719b3c08e5baf4b6f51f6.

Countless intermittent sanitizer warnings can be attributed to it.
size_t nSendOffset{0}; 
    uint64_t nSendBytes GUARDED_BY(cs_vSend){0};
    std::deque<std::vector<unsigned char>> vSendMsg GUARDED_BY(cs_vSend);
    RecursiveMutex cs_vSend;
    RecursiveMutex cs_hSocket;
    RecursiveMutex cs_vRecv;
    RecursiveMutex cs_vProcessMsg;
    std::list<CNetMessage> vProcessMsg GUARDED_BY(cs_vProcessMsg);
    size_t nProcessQueueSize{0};
    RecursiveMutex cs_sendProcessing;
    std::deque<CInv> vRecvGetData;
    uint64_t nRecvBytes GUARDED_BY(cs_vRecv){0};
    std::atomic<int> nRecvVersion{INIT_PROTO_VERSION};
    std::atomic<int64_t> nLastSend{0};
    std::atomic<int64_t> nLastRecv{0};
    const int64_t nTimeConnected;
    std::atomic<int64_t> nTimeOffset{0};
    
    const CAddress addr;
    
    const CAddress addrBind;
    std::atomic<int> nVersion{0};
    RecursiveMutex cs_SubVer;
    /**
     * cleanSubVer is a sanitized string of the user agent byte array we read
     * from the wire. This cleaned string can safely be logged or displayed.
     */
    std::string cleanSubVer GUARDED_BY(cs_SubVer){};
    bool m_prefer_evict{false}; 
    bool HasPermission(NetPermissionFlags permission) const {