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Cisco Bug: CSCvu20893 - CTIManager cored due to double free operation

Last Modified

Aug 25, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

12.5(1.12900.115)

Description (partial)

Symptom:
CTIManager service crashing while trying to access memory block which is corrupted. Someone overwrote some of its bytes.

Conditions:
CTIManager services cores and generates the the below backtrace.

#0  0xf77a0430 in __kernel_vsyscall ()
#1  0xf66de147 in raise () from /usr/lib/libc.so.6
#2  0xf66df983 in abort () from /usr/lib/libc.so.6
#3  0xf671fef5 in __libc_message () from /usr/lib/libc.so.6
#4  0xf672898d in _int_free () from /usr/lib/libc.so.6
#5  0xf77b65c5 in _dl_close_worker () from /lib/ld-linux.so.2
#6  0xf77b6df1 in _dl_close () from /lib/ld-linux.so.2
#7  0xf6a3ed22 in dlclose_doit () from /usr/lib/libdl.so.2
#8  0xf77b0d6a in _dl_catch_error () from /lib/ld-linux.so.2
#9  0xf6a3f32c in _dlerror_run () from /usr/lib/libdl.so.2
#10 0xf6a3ed58 in dlclose () from /usr/lib/libdl.so.2
#11 0xf733eb82 in _OdbcFreeLibrary () from /usr/local/cm/db/informix/lib/cli/libthcli.so
#12 0xf7349946 in _OdbcFreeGlsDll () from /usr/local/cm/db/informix/lib/cli/libthcli.so
#13 0xf7336596 in _OdbcDisconnect () from /usr/local/cm/db/informix/lib/cli/libthcli.so
#14 0xf72f6615 in _OdbcSqlDisconnect () from /usr/local/cm/db/informix/lib/cli/libthcli.so
#15 0xf72f6767 in SQLDisconnect () from /usr/local/cm/db/informix/lib/cli/libthcli.so
#16 0xf74625a3 in odbc::Connection::~Connection (this=0xf5ad5f58, __in_chrg=<optimized out>) at connection.cpp:111
#17 0xf746277c in odbc::Connection::~Connection (this=0xf5ad5f58, __in_chrg=<optimized out>) at connection.cpp:139
#18 0xf74e4917 in dbl::DriverManager::FreeConnectionFailOver () at dbldriver.cpp:970
#19 0xf74db39a in dbl::ConnMonitorTask::svc (this=0x57713368) at ConnMonitorTask.cpp:91
#20 0xf6be725a in ACE_Task_Base::svc_run (args=0x57713368) at Task.cpp:271
#21 0xf6be8c6d in ACE_Thread_Adapter::invoke_i (this=0x577185f8) at Thread_Adapter.cpp:161
#22 0xf6be8bb4 in ACE_Thread_Adapter::invoke (this=0x577185f8) at Thread_Adapter.cpp:96
#23 0xf6b7d5af in ace_thread_adapter (args=0x577185f8) at Base_Thread_Adapter.cpp:126
#24 0xf6a09b4c in start_thread () from /usr/lib/libpthread.so.0
#25 0xf67ad01e in clone () from /usr/lib/libc.so.6
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