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| RHEL Version | Codename | Release Date | Kernel |
|---|---|---|---|
| 6.2E | Zoot | 27 March 2000 | |
| 2.1 AS | Pensacola | 26 March 2002 | |
| 2.1 ES | Panama | May 2003 | |
| 3 | Taroon | 22 October 2003 | 2.4.21-4 |
| 3 Update 1 | Taroon | 16 January 2004 | 2.4.21-9 |
| 3 Update 2 | Taroon | 18 May 2004 | |
| 3 Update 3 | Taroon | 3 September 2004 | |
| 3 Update 4 | Taroon | 21 December 2004 | |
| 3 Update 5 | Taroon | 20 May 2005 | 2.4.21-32 |
| 3 Update 6 | Taroon | 28 September 2005 | 2.4.21-35 |
| 3 Update 7 | Taroon | 15 March 2006 | |
| 3 Update 8 | Taroon | 20 July 2006 | 2.4.21-47 |
| 3 Update 9 | Taroon | 15 June 2007 | 2.4.21-50 |
| 4 | Nahant | 15 February 2005 | 2.6.9-5 |
| 4 Update 1 | Nahant | 9 June 2005 | 2.6.9-11 |
| 4 Update 2 | Nahant | 5 October 2005 | 2.6.9-22 |
| 4 Update 3 | Nahant | 7 March 2006 | 2.6.9-34 |
| 4 Update 4 | Nahant | 11 August 2006 | 2.6.9-42 |
| 4 Update 5 | Nahant | 1 May 2007 | 2.6.9-55 |
| 4 Update 6 | Nahant | 15 November 2007 | 2.6.9-67 |
| 4 Update 7 | Nahant | 24 July 2008 | 2.6.9-78 |
| 4 Update 8 | Nahant | 19 May 2009 | 2.6.9-89 |
| 5 | Tikanga | 14 March 2007 | 2.6.18-8 |
| 5.1 | Tikanga | 17 November 2007 | 2.6.18-53 |
| 5.2 | Tikanga | 21 May 2008 | 2.6.18-92 |
| 5.3 | Tikanga | 20 January 2009 | 2.6.18-128 |
| 5.4 | Tikanga | 02 September 2009 | 2.6.18-164 |
| 5.5 | Tikanga | 30 March 2010 | 2.6.18-194 |
| 5.6 | Tikanga | 13 January 2011 | 2.6.18-238 |
| 5.7 | Tikanga | 21 July 2011 | 2.6.18-274 |
| 6.0 | Santiago | 10 November 2010 | |
| 6.1 | Santiago | 19 May 2011 | 2.6.32-131 |
| 6.2 | Santiago | 6 December 2011 | 2.6.32-220 |
| 6.3 | Santiago | 20 June 2012 | 2.6.32-279 |
| 6.4 | Santiago | 21 February 2013 | 2.6.32-358 |
| 6.5 | Santiago | 21 November 2013 | 2.6.32-431 |
| 6.6 | Santiago | 14 October 2014 | 2.6.32-504 |
| 6.7 | Santiago | TBA | TBA |
| 7.0 | Maipo | 10 June 2014 | 3.10.0-123 |
| 7.1 | Maipo | 5 March 2015 | 3.10.0-229 |