I’ve decided to create this blog entry just to share Oracle Linux and UEK releases, how those are associated and which UEK releases are available on different OL versions. So, maybe, this article could be useless for many people who already know which UEK releases are available on each OL release but, at the same time, could be helpful for many others approaching Oracle Linux:

Oracle Linux 10 – x86_64

OL Release Initial UEK kernel Initial RHCK kernel UEK8 supported
OL10 kernel-uek-6.12.0-100.28.2 kernel-6.12.0-55.9.1.0.1 Yes, default

Oracle Linux 9 – x86_64

OL Release Initial UEK kernel Initial RHCK kernel UEK7 supported UEK8 supported
OL9U6 kernel-uek-6.12.0-1.23.3.2 kernel-5.14.0-570.12.1.0.1 Yes Yes, default
OL9U5 kernel-uek-5.15.0-302.167.6 kernel-5.14.0-503.11.1 Yes, default Yes
OL9U4 kernel-uek-5.15.0-205.149.5.1 kernel-5.14.0-427 Yes, default No, OL9U5 req.
OL9U3 kernel-uek-5.15.0-200.131.27 kernel-5.14.0-362.8.1 Yes, default No, OL9U5 req.
OL9U2 kernel-uek-5.15.0-101.103.2.1 kernel-5.14.0-284.11.1 Yes, default No, OL9U5 req.
OL9U1 kernel-uek-5.15.0-3.60.5.1 kernel-5.14.0-162.6.1 Yes, default No, OL9U5 req.
OL9 kernel-uek-5.15.0-0.30.19 kernel-5.14.0-70.13.1.0.3 Yes, default No, OL9U5 req.

Oracle Linux 8 – x86_64

OL Release Initial UEK kernel Initial RHCK kernel UEK6 supported UEK7 supported
OL8U10 kernel-uek-5.15.0-206.153.7 kernel-4.18.0-544 Yes Yes, default
OL8U9 kernel-uek-5.15.0-200.131.27 kernel-4.18.0-513.5.1 Yes Yes, default
OL8U8 kernel-uek-5.15.0-101.103.2.1 kernel-4.18.0-477.10.1 Yes Yes, default
OL8U7 kernel-uek-5.15.0-3.60.5.1 kernel-4.18.0-425.3.1 Yes Yes, default
OL8U6 kernel-uek-5.4.17-2136.307.3 kernel-4.18.0-372.9.1 Yes, default Yes
OL8U5 kernel-uek-5.4.17-2136.300.7 kernel-4.18.0-348 Yes, default Yes
OL8U4 kernel-uek-5.4.17-2102.201.3 kernel-4.18.0-305 Yes, default No. OL8U5 req.
OL8U3 kernel-uek-5.4.17-2011.7.4 kernel-4.18.0-240 Yes, default No. OL8U5 req.
OL8U2 kernel-uek-5.4.17-2011.1.2 kernel-4.18.0-193 Yes, default No. OL8U5 req.
OL8U1 Not Available kernel-4.18.0-147 Yes No. OL8U5 req.
OL8 Not Available kernel-4.18.0-80 No. OL8U1 req. No. OL8U5 req.

Oracle Linux 7 – x86_64

OL Release Initial UEK kernel Initial RHCK kernel UEK3 supported UEK4 supported UEK5 supported UEK6 supported
OL7U9 kernel-uek-5.4.17-2011.6.2 kernel-3.10.0-1160 Yes, Sustaining Yes, Sustaining Yes, Sustaining Yes, Extended
OL7U8 kernel-uek-4.14.35-1902.300.11 kernel-3.10.0-1127 Yes, Sustaining Yes, Sustaining Yes, Sustaining Yes, Extended
OL7U7 kernel-uek-4.14.35-1902.3.2 kernel-3.10.0-1062 Yes, Sustaining Yes, Sustaining Yes, Sustaining Yes, Extended
OL7U6 kernel-uek-4.14.35-1818.3.3 kernel-3.10.0-957 Yes, Sustaining Yes, Sustaining Yes, Sustaining No. OL7U7 req.
OL7U5 kernel-uek-4.1.12-112.16.4 kernel-3.10.0-862 Yes, Sustaining Yes, Sustaining Yes, Sustaining No. OL7U7 req.
OL7U4 kernel-uek-4.1.12-94.3.9 kernel-3.10.0-693 Yes, Sustaining Yes, Sustaining No. OL7U5 req. No. OL7U7 req.
OL7U3 kernel-uek-4.1.12-61.1.18 kernel-3.10.0-514 Yes, Sustaining Yes, Sustaining No. OL7U5 req. No. OL7U7 req.
OL7U2 kernel-uek-3.8.13-98.7.1 kernel-3.10.0-327 Yes, Sustaining Yes, Sustaining No. OL7U5 req. No. OL7U7 req.
OL7U1 kernel-uek-3.8.13-55.1.6 kernel-3.10.0-229 Yes, Sustaining Yes, Sustaining No. OL7U5 req. No. OL7U7 req.
OL7 kernel-uek-3.8.13-35.3.1 kernel-3.10.0-123 Yes, Sustaining No. OL7U1 req. No. OL7U5 req. No. OL7U7 req.

Oracle Linux 6 – x86_64

OL Release Initial UEK kernel Initial RHCK kernel UEK2 supported UEK3 supported UEK4 supported
OL6U10 kernel-uek-4.1.12-124.16.4 kernel-2.6.32-754 Yes, Sustaining Yes, Sustaining Yes, Sustaining
OL6U9 kernel-uek-4.1.12-61.1.28 kernel-2.6.32-696 Yes, Sustaining Yes, Sustaining Yes, Sustaining
OL6U8 kernel-uek-4.1.12-37.4.1 kernel-2.6.32-642 Yes, Sustaining Yes, Sustaining Yes, Sustaining
OL6U7 kernel-uek-3.8.13-68.3.4 kernel-2.6.32-573 Yes, Sustaining Yes, Sustaining No. OL6U8 req.
OL6U6 kernel-uek-3.8.13-44.1.1 kernel-2.6.32-504 Yes, Sustaining Yes, Sustaining No. OL6U8 req.
OL6U5 kernel-uek-3.8.13-16.2.1 kernel-2.6.32-431 Yes, Sustaining Yes, Sustaining No. OL6U8 req.
OL6U4 kernel-uek-2.6.39-400.17.1 kernel-2.6.32-358 Yes, Sustaining No. OL6U5 req. No. OL6U8 req.
OL6U3 kernel-uek-2.6.39-200.24.1 kernel-2.6.32-279 Yes, Sustaining No. OL6U5 req. No. OL6U8 req.
OL6U2 kernel-uek-2.6.32-300.3.1 kernel-2.6.32-220 Yes, Sustaining No. OL6U5 req. No. OL6U8 req.
OL6U1 kernel-uek-2.6.32-100.34.1 kernel-2.6.32-131.0.15 No. OL6U2 req. No. OL6U5 req. No. OL6U8 req.
OL6 kernel-uek-2.6.32-100.28.5 kernel-2.6.32-71 No. OL6U2 req. No. OL6U5 req. No. OL6U8 req.

 

    Extended Support
    • Oracle Linux Extended Support may be offered for certain supported Oracle Linux program releases after Oracle Linux Premier Support expires.
    • When Oracle Linux Extended Support is offered, it is generally available for the terminal codeline release of a program.
  • Sustaining Support
    • Sustaining Support will be available after Premier Support expires.
    • As program releases under Sustaining Support are no longer fully supported, information and skills regarding those releases may be limited.
  • Oracle Linux Lifetime support policies are available through the Lifetime Support Policy: Coverage for Oracle Open Source Service Offerings document.
  • Oracle Linux Support levels details, that includes Premier, Basic, Extended and Sustaining, are available through the Oracle Open Source Support Policies document.

 

Oracle Linux ISO Downloads are public available for free at http://yum.oracle.com/oracle-linux-isos.html

NB: RHCK acronym stands for Red Hat Compatible Kernel.

As you maybe already know, Oracle Linux also supports aarch64 architecture:

Oracle Linux 10 – aarch64

OL Release Initial UEK kernel Initial RHCK kernel UEK8 supported
OL10 – aarch64 kernel-uek-6.12.0-100.28.2 Not Available Yes, default

Oracle Linux 9 – aarch64

OL Release Initial UEK kernel Initial RHCK kernel UEK7 supported UEK8 supported
OL9U6 – aarch64 kernel-uek-6.12.0-1.23.3.2 Not Available Yes Yes, default
OL9U5 – aarch64 kernel-uek-5.15.0-302.167.6 Not Available Yes, default Yes
OL9U4 – aarch64 kernel-uek-5.15.0-205.149.5.1 Not Available Yes, default No, OL9U5 req.
OL9U3 – aarch64 kernel-uek-5.15.0-200.131.27 Not Available Yes, default No, OL9U5 req.
OL9U2 – aarch64 kernel-uek-5.15.0-101.103.2.1 Not Available Yes, default No, OL9U5 req.
OL9U1 – aarch64 kernel-uek-5.15.0-3.60.5.1 Not Available Yes, default No, OL9U5 req.
OL9 – aarch64 kernel-uek-5.15.0-0.30 Not Available Yes, default No, OL9U5 req.

Oracle Linux 8 – aarch64

OL Release Initial UEK kernel Initial RHCK kernel UEK6 supported UEK7 supported
OL8U10 – aarch64 kernel-uek-5.15.0-206.153.7 Not Available Yes Yes, default
OL8U9 – aarch64 kernel-uek-5.15.0-200.131.27 Not Available Yes Yes, default
OL8U8 – aarch64 kernel-uek-5.15.0-101.103.2.1 Not Available Yes Yes, default
OL8U7 – aarch64 kernel-uek-5.15.0-3.60.5.1 Not Available Yes Yes, default
OL8U6 – aarch64 kernel-uek-5.4.17-2136.307.3 Not Available Yes, default Yes
OL8U5 – aarch64 kernel-uek-5.4.17-2136.300.7 Not Available Yes, default No. OL8U6 req.
OL8U4 – aarch64 kernel-uek-5.4.17-2102.201.3 Not Available Yes, default No. OL8U6 req.
OL8U3 – aarch64 kernel-uek-5.4.17-2011.7.4 Not Available Yes, default No. OL8U6 req.
OL8U2 – aarch64 kernel-uek-5.4.17-2011.1.2 Not Available Yes, default No. OL8U6 req.

Oracle Linux 7 – aarch64

OL Release Initial UEK kernel Initial RHCK kernel UEK5 supported UEK6 supported
OL7U9 – aarch64 kernel-uek-5.4.17-2011.6.2 Not available Yes, Sustaining Yes, Sustaining
OL7U8 – aarch64 kernel-uek-5.4.17-2011.0.7 Not Available Yes, Sustaining Yes, Sustaining
OL7U7 – aarch64 kernel-uek-4.14.35-1902.3.2 Not Available Yes, Sustaining No
OL7U6 – aarch64 kernel-uek-4.14.35-1818.3.3 Not Available Yes, Sustaining No
OL7U5 – aarch64 kernel-uek-4.14.35-1818.0.9 Not Available Yes, Sustaining No

Related to the Kernel I also want to specify something important related to the UEK acronym and releases associated:

Kernel Release UEK Acronym Oracle Linux 6 Oracle Linux 7 Oracle Linux 8 Oracle Linux 9 Oracle Linux 10
6.16.0 UEK-Next Not Available Not Available Not Available x86_64 aarch64 x86_64 aarch64
6.12.0 UEK8 Not Available Not Available Not Available x86_64 aarch64 x86_64 aarch64
5.15.0 UEK7 Not Available Not Available x86_64 aarch64 x86_64 aarch64 Not Available
5.4.17 UEK6 Not Available x86_64 aarch64 x86_64 Not Available Not Available
4.14.35 UEK5 Not Available x86_64 Not Available Not Available Not Available
4.1.12 UEK4 x86_64 x86_64 Not Available Not Available Not Available
3.8.13 UEK3 x86_64 x86_64 Not Available Not Available Not Available
2.6.39 UEK2 x86_64 Not Available Not Available Not Available Not Available
2.6.32 UEK x86_64 Not Available Not Available Not Available Not Available

On the following table, for each UEK Update Acronym, you can find the Major Kernel Release associated:

Kernel Acronym Kernel Major Release Kernel Release Date
UEK8U1 6.12.0-10* June, 2025
UEK8 6.12.0 April, 2025
UEK7U3 5.15.0-30* September, 2024
UEK7U2 5.15.0-20* October, 2023
UEK7U1 5.15.0-10* April, 2023
UEK7 5.15.0 June, 2022
UEK6U3 5.4.17-2136 October, 2021
UEK6U2 5.4.17-2102 March, 2021
UEK6U1 5.4.17-2036 November, 2020
UEK6 5.4.17-2011 March, 2020
UEK5U5 4.14.35-2047.5* February, 2021
UEK5U4 4.14.35-2025.4* September, 2020
UEK5U3 4.14.35-1902.30* March, 2020
UEK5U2 4.14.35-1902 June, 2019
UEK5U1 4.14.35-1844 December, 2018
UEK5 4.14.35-1818 June, 2018
UEK4U7 4.1.12-124 April, 2018
UEK4U6 4.1.12-112 December, 2017
UEK4U5 4.1.12-103 August, 2017
UEK4U4 4.1.12-94 April, 2017
UEK4U3 N/A N/A
UEK4U2 4.1.12-61 August, 2016
UEK4U1 4.1.12-37 April, 2016
UEK4 4.1.12-32 January, 2016
UEK3U7 3.8.13-118 November, 2015
UEK3U6 3.8.13-98 July, 2015
UEK3U5 3.8.13-68 March, 2015
UEK3U4 3.8.13-55 January, 2015
UEK3U3 3.8.13-44 August, 2014
UEK3U2 3.8.13-35 May, 2014
UEK3U1 3.8.13-26 February, 2014
UEK3 3.8.13-16 October, 2013
UEK2U5 2.6.39-400.209.1 September, 2013
UEK2U4 2.6.39-400.109.1 July, 2013
UEK2U3 2.6.39-400 February, 2013
UEK2U2 2.6.39-300 October, 2012
UEK2U1 2.6.39-200 June, 2012
UEK2 2.6.39-100 March, 2012

Further information:

I’ll do my best to keep those information updated and, in the meanwhile, feel free to leave your comments here.