A kernel security update has been released for CentOS 5

CentOS Errata and Security Advisory 2015:1042 Important

Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1042.html

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

i386:
a7bfa5e63a167a8646502974127df86e30ce25bd5236702345ad5fe654dfdd55 kernel-2.6.18-406.el5.i686.rpm
d4a5245ea7c03dabf103c77625bd1d07edbaf84730bb8657d5ab73bdd2db9cc1 kernel-debug-2.6.18-406.el5.i686.rpm
2d41b245d910dc26251dc0aec60077373cce38b8fba914e2e5330ae3aedef7d5 kernel-debug-devel-2.6.18-406.el5.i686.rpm
6f04abd548af95c5674da3947cf47a00bb3fb65a968cef7d3ef309e8f23c4f0f kernel-devel-2.6.18-406.el5.i686.rpm
8135c348dda781a0c4cbd2e681ca79592c9c570d8a719dda699805889dd012db kernel-doc-2.6.18-406.el5.noarch.rpm
58f74b1087fea7e6107adb1fb3426f35291e3744d3090dff6b464a9f141abffd kernel-headers-2.6.18-406.el5.i386.rpm
97738c288a1f5eeb990836abc121141a28a06a5af93fb1835cfd923560dbb8cf kernel-PAE-2.6.18-406.el5.i686.rpm
04a12b7f9b1ed1e4ffd48c23cf330f4cb9f93974d5d63950927765723b7e054d kernel-PAE-devel-2.6.18-406.el5.i686.rpm
a1a7da8dde91665ae6020faa06cdb01b9d38705ca0c0a385cc3f58734b3184f8 kernel-xen-2.6.18-406.el5.i686.rpm
83111d0f1f2978feaffd7a10a5ffd83a39b0614bb05dcb617376b7128bf7e148 kernel-xen-devel-2.6.18-406.el5.i686.rpm

x86_64:
834ee2dd5e935b8a25f2c5ccd38db308a98f02b374e2d7b344533d17bad2da2c kernel-2.6.18-406.el5.x86_64.rpm
71571dd466800e193218def369dd686e885d4b049b3793a861ba22eddeddadc2 kernel-debug-2.6.18-406.el5.x86_64.rpm
c3aa7cef9ffd211999d6a912d4268da3fef14dc0b9b37bcdf8ec27b0793ab075 kernel-debug-devel-2.6.18-406.el5.x86_64.rpm
177af15945aa3278e6c69a6f6cc4a8c7c71bcd69dafcf43361fe34c5f40b207f kernel-devel-2.6.18-406.el5.x86_64.rpm
8135c348dda781a0c4cbd2e681ca79592c9c570d8a719dda699805889dd012db kernel-doc-2.6.18-406.el5.noarch.rpm
d74eaaf916c47a4c5972be51eede9f3103e8cbf8088b050de4799b80b9572b6e kernel-headers-2.6.18-406.el5.x86_64.rpm
a9e99724f48f1b97078774fad6bce2bd9af5565e05f4a03440dca015873c876f kernel-xen-2.6.18-406.el5.x86_64.rpm
92b41d54d4314bb763c475896df4149c5fde128930ac2d000742db9e7fad33e7 kernel-xen-devel-2.6.18-406.el5.x86_64.rpm

Source:
fbe67f9d5aa5df397e6d2aaa19f81d2699985d000e33da6e4759955127c82f0e kernel-2.6.18-406.el5.src.rpm

  CentOS 5 kernel Security Update