yumupdate报错，不知道怎么回事

收到邮件“Linux Glibc库严重安全漏洞修复通知”，处理时候出错，不知道为什么yum update也报错了。麻烦帮忙看看什么问题
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# yum update
Loaded plugins: fastestmirror
Setting up Update Process
Loading mirror speeds from cached hostfile
* base: ftp.sjtu.edu.cn
* extras: ftp.sjtu.edu.cn
* rpmforge: mirrors.neusoft.edu.cn
* updates: ftp.sjtu.edu.cn
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
The program yum-complete-transaction is found in the yum-utils package.
--> Running transaction check
---> Package curl.x86_64 0:7.19.7-40.el6_6.1 will be updated
---> Package curl.x86_64 0:7.19.7-40.el6_6.4 will be an update
---> Package dhclient.x86_64 12:4.1.1-43.P1.el6.centos will be updated
---> Package dhclient.x86_64 12:4.1.1-43.P1.el6.centos.1 will be an update
---> Package dhcp-common.x86_64 12:4.1.1-43.P1.el6.centos will be updated
---> Package dhcp-common.x86_64 12:4.1.1-43.P1.el6.centos.1 will be an update
---> Package glibc-headers.x86_64 0:2.12-1.149.el6 will be updated
--> Processing Dependency: glibc-headers = 2.12-1.149.el6 for package: glibc-devel-2.12-1.149.el6.x86_64
---> Package glibc-headers.x86_64 0:2.12-1.149.el6_6.5 will be an update
---> Package kernel.x86_64 0:2.6.32-504.8.1.el6 will be installed
---> Package kernel-firmware.noarch 0:2.6.32-504.1.3.el6 will be updated
---> Package kernel-firmware.noarch 0:2.6.32-504.8.1.el6 will be an update
---> Package kernel-headers.x86_64 0:2.6.32-504.1.3.el6 will be updated
---> Package kernel-headers.x86_64 0:2.6.32-504.8.1.el6 will be an update
---> Package libcurl.x86_64 0:7.19.7-40.el6_6.1 will be updated
---> Package libcurl.x86_64 0:7.19.7-40.el6_6.4 will be an update
---> Package libcurl-devel.x86_64 0:7.19.7-40.el6_6.1 will be updated
---> Package libcurl-devel.x86_64 0:7.19.7-40.el6_6.4 will be an update
---> Package libssh2.x86_64 0:1.4.2-1.el6 will be updated
---> Package libssh2.x86_64 0:1.4.2-1.el6_6.1 will be an update
---> Package nss.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-softokn.x86_64 0:3.14.3-18.el6_6 will be updated
---> Package nss-softokn.x86_64 0:3.14.3-22.el6_6 will be an update
---> Package nss-softokn-freebl.x86_64 0:3.14.3-18.el6_6 will be updated
---> Package nss-softokn-freebl.x86_64 0:3.14.3-22.el6_6 will be an update
---> Package nss-sysinit.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss-sysinit.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-tools.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss-tools.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-util.x86_64 0:3.16.1-3.el6 will be updated
---> Package nss-util.x86_64 0:3.16.2.3-2.el6_6 will be an update
---> Package ntp.x86_64 0:4.2.6p5-1.el6.centos will be updated
---> Package ntp.x86_64 0:4.2.6p5-2.el6.centos will be an update
---> Package ntpdate.x86_64 0:4.2.6p5-1.el6.centos will be updated
---> Package ntpdate.x86_64 0:4.2.6p5-2.el6.centos will be an update
---> Package openssl.x86_64 0:1.0.1e-30.el6_6.4 will be updated
---> Package openssl.x86_64 0:1.0.1e-30.el6_6.5 will be an update
---> Package openssl-devel.x86_64 0:1.0.1e-30.el6_6.4 will be updated
---> Package openssl-devel.x86_64 0:1.0.1e-30.el6_6.5 will be an update
---> Package rpm.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package rpm-libs.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm-libs.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package rpm-python.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm-python.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package rsyslog.x86_64 0:5.8.10-9.el6_6 will be updated
---> Package rsyslog.x86_64 0:5.8.10-10.el6_6 will be an update
---> Package system-config-firewall-base.noarch 0:1.2.27-7.1.el6 will be updated
---> Package system-config-firewall-base.noarch 0:1.2.27-7.2.el6_6 will be an update
--> Finished Dependency Resolution
Error: Package: glibc-devel-2.12-1.149.el6.x86_64 (@base)
           Requires: glibc-headers = 2.12-1.149.el6
           Removing: glibc-headers-2.12-1.149.el6.x86_64 (@base)
               glibc-headers = 2.12-1.149.el6
           Updated By: glibc-headers-2.12-1.149.el6_6.5.x86_64 (updates)
               glibc-headers = 2.12-1.149.el6_6.5
           Available: glibc-headers-2.12-1.149.el6_6.4.x86_64 (updates)
               glibc-headers = 2.12-1.149.el6_6.4
You could try using --skip-broken to work around the problem
** Found 12 pre-existing rpmdb problem(s), 'yum check' output follows:
glibc-2.12-1.149.el6_6.5.x86_64 is a duplicate with glibc-2.12-1.149.el6.x86_64
glibc-common-2.12-1.149.el6_6.5.x86_64 is a duplicate with glibc-common-2.12-1.149.el6.x86_64
glibc-devel-2.12-1.149.el6_6.5.x86_64 is a duplicate with glibc-devel-2.12-1.149.el6.x86_64
glibc-devel-2.12-1.149.el6_6.5.x86_64 has missing requires of glibc-headers = ('0', '2.12', '1.149.el6_6.5')
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(DBI)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(Time::HiRes)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_gcov.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_gprof.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_io.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_misc.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(lib::mtr_process.pl)
lanmp_wdcp-2-5.el6.x86_64 has missing requires of perl(mtr_misc.pl)
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