Why is Red Hat Enterprise Linux 5 bash package getting frequent segfaults?

Issue

• Bash is getting frequent segmentation faults as follows.

Nov 11 07:46:44 testserver kernel: bash[11876]: segfault at 00007fff1c6f0ff8 rip 000000000041c3f6 rsp 00007fff1c6f1000 error 6
Nov 11 09:07:35 testserver kernel: bash[15934]: segfault at 00007fff248e2fd8 rip 000000000041e8c9 rsp 00007fff248e2fe0 error 6
Nov 11 09:13:56 testserver kernel: bash[16232]: segfault at 00007fff0eaa9fd8 rip 000000000041e8c9 rsp 00007fff0eaa9fe0 error 6
Nov 11 09:22:04 testserver kernel: bash[16694]: segfault at 00007fff56236ff8 rip 0000003c98671bf5 rsp 00007fff56237000 error 6
Nov 11 09:27:05 testserver kernel: bash[17133]: segfault at 00007fff204c6ff8 rip 0000003c98624192 rsp 00007fff204c6fe0 error 6
Nov 11 11:19:51 testserver kernel: bash[22747]: segfault at 00007fff08d1fea4 rip 0000000000421560 rsp 00007fff08d1fe90 error 6
Nov 11 11:27:06 testserver kernel: bash[23379]: segfault at 00007fff1c064ff8 rip 000000000041e872 rsp 00007fff1c065000 error 6
Nov 11 11:29:37 testserver kernel: bash[23504]: segfault at 00007fff2f9fefd8 rip 000000000041e8c9 rsp 00007fff2f9fefe0 error 6
Nov 11 11:30:59 testserver kernel: bash[23642]: segfault at 00007fffd228ce14 rip 0000000000421560 rsp 00007fffd228ce00 error 6
Nov 11 11:36:16 testserver kernel: bash[24071]: segfault at 00007fff4acebfe8 rip 000000000041e8c9 rsp 00007fff4acebff0 error 6
Nov 11 11:41:18 testserver kernel: bash[24333]: segfault at 00007fffd17c4ff0 rip 0000003c986728c8 rsp 00007fffd17c4fb0 error 6
Nov 11 11:41:39 testserver kernel: bash[24374]: segfault at 00007fff36654ee4 rip 0000000000421560 rsp 00007fff36654ed0 error 6
Nov 11 11:43:04 testserver kernel: bash[24427]: segfault at 00007fffc8e0cef4 rip 0000000000421560 rsp 00007fffc8e0cee0 error 6
Nov 11 11:46:03 testserver kernel: bash[24792]: segfault at 00007fff9c03fff8 rip 0000000000421571 rsp 00007fff9c03fff0 error 6
Nov 11 11:46:39 testserver kernel: bash[24802]: segfault at 00007fffa74acff8 rip 000000000041c3f6 rsp 00007fffa74ad000 error 6
Nov 11 12:12:01 testserver kernel: bash[26226]: segfault at 00007fff040fbf74 rip 0000000000421560 rsp 00007fff040fbf60 error 6
Nov 11 12:22:46 testserver kernel: bash[26819]: segfault at 00007fff2b0a6ff8 rip 0000003c98672ac3 rsp 00007fff2b0a6fc0 error 6
Nov 11 12:23:30 testserver kernel: bash[26837]: segfault at 00007ffff3526ff0 rip 0000003c98671c04 rsp 00007ffff3526fe0 error 6
Nov 11 12:23:58 testserver kernel: bash[26849]: segfault at 00007fffbab04eb4 rip 0000000000421560 rsp 00007fffbab04ea0 error 6
Nov 11 12:28:02 testserver kernel: bash[27234]: segfault at 00007ffff48bafe4 rip 0000000000421560 rsp 00007ffff48bafd0 error 6