May 2026 - CoreOS - Fedora mailing-lists

Fedora CoreOS Community Meeting Minutes 2026-05-27
by Michael Armijo 27 May '26

27 May '26

Minutes: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Minutes (text): https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Log: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… ===================================== # #meeting-1:fedoraproject.org: fedora_coreos_meeting ===================================== Meeting started by @marmijo:fedora.im at 2026-05-27 15:30:23 Meeting summary --------------- * TOPIC: roll call (@marmijo:fedora.im, 15:30:28) * TOPIC: Action items from last meeting (@marmijo:fedora.im, 15:36:09) * INFO: there are no action items from the last meeting (@marmijo:fedora.im, 15:36:19) * TOPIC: Compress container images using zstd (@marmijo:fedora.im, 15:38:24) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2150 (@marmijo:fedora.im, 15:38:30) * INFO: PROPOSED: Investigate switching Fedora CoreOS container image layer compression from gzip to zstd, including running benchmarks to confirm improvements in network bandwidth and update speed, with the goal of enabling zstd by default if results are positive. (@marmijo:fedora.im, 15:49:31) * AGREED: Investigate switching Fedora CoreOS container image layer compression from gzip to zstd, including running benchmarks to confirm improvements in network bandwidth and update speed, with the goal of enabling zstd by default if results are positive. (@marmijo:fedora.im, 15:51:03) * TOPIC: Denylist/blacklist a set of "unlikely to be used" kernel modules by default (@marmijo:fedora.im, 15:51:17) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2152 (@marmijo:fedora.im, 15:51:26) * TOPIC: Open Floor (@marmijo:fedora.im, 16:24:12) Meeting ended at 2026-05-27 16:31:35 Action items ------------ People Present (lines said) --------------------------- * @siosm:fedora.im (38) * @dustymabe:matrix.org (26) * @marmijo:fedora.im (24) * @zodbot:fedora.im (12) * @jlebon:fedora.im (7) * @spresti:fedora.im (6) * @jbtrystram:matrix.org (5) * @cverna_:matrix.org (5) * @hricky:fedora.im (4) * @jcline:fedora.im (4) * @peytonrobertson:matrix.org (3) * @meetbot:fedora.im (2) * @angelcr:matrix.org (2) * @cadejacobson:matrix.org (1) * @nemric:relativit.fr (1) * @rapneset:matrix.org (1)

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[Fedocal] Reminder meeting : Fedora CoreOS Group Weekly Meeting
by dusty＠dustymabe.com 26 May '26

26 May '26

Dear all, You are kindly invited to the meeting: Fedora CoreOS Group Weekly Meeting on 2026-05-27 from 15:30:00 to 16:30:00 UTC The meeting will be about: This is the meeting for the Fedora CoreOS Working Group. We typically go over previous meeting action items and then cover all tickets with the meeting keyword: https://github.com/coreos/fedora-coreos-tracker/labels/meeting. For how to run the meeting, see https://github.com/coreos/fedora-coreos-tracker#steps-to-run-the-meeting Location: https://matrix.to/#/#meeting-1:fedoraproject.org More Info: https://github.com/coreos/fedora-coreos-tracker#meetings Source: https://calendar.fedoraproject.org//meeting/9437/

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Fedora CoreOS Community Meeting Minutes 2026-05-20
by Angel Cervera Roldan 21 May '26

21 May '26

Minutes: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Minutes (text): https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Log: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… ===================================== # #meeting-1:fedoraproject.org: fedora_coreos_meeting ===================================== Meeting started by @angelcr:matrix.org at 2026-05-20 15:30:09 Meeting summary --------------- * TOPIC: roll call (@angelcr:matrix.org, 15:30:42) * TOPIC: Action items from last meeting (@angelcr:matrix.org, 15:34:26) * TOPIC: Review Fedora 45 Release Schedule (@angelcr:matrix.org, 15:37:06) * LINK: https://fedorapeople.org/groups/schedule/f-45/f-45-key-tasks.html (@angelcr: matrix.org, 15:37:16) * TOPIC: Rework and evaluate kola-upgrade testing strategy (@angelcr: matrix.org, 15:42:20) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2146 (@angelcr:matrix.org, 15:42:36) * TOPIC: use chunkah to split container images and increase max layers (@angelcr:matrix.org, 16:14:26) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2145 (@angelcr:matrix.org, 16:15:04) * AGREED: we will try to use chunkah for chunking up our container layers and experiment rolling out a relatively high limit for the number of layers. we'll start in rawhide and next to see if there are any issues (@angelcr:matrix.org, 16:31:21) Meeting ended at 2026-05-20 16:32:45 Action items ------------ People Present (lines said) --------------------------- * @dustymabe:matrix.org (64) * @siosm:fedora.im (24) * @angelcr:matrix.org (24) * @jbtrystram:matrix.org (16) * @marmijo:fedora.im (12) * @zodbot:fedora.im (10) * @ydesouza:fedora.im (2) * @meetbot:fedora.im (2) * @peytonrobertson:matrix.org (2) * @thilofm:matrix.org (1) * @nemric:relativit.fr (1) * @spresti:fedora.im (1) * @rapneset:matrix.org (1)

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Fragnesia & ssh-keysign-pwn fixes for Fedora CoreOS
by Michael Armijo 20 May '26

20 May '26

The "Fragnesia" (CVE-2026-46300) [1] and "ssh-keysign-pwn" (CVE-2026-46333) [2] vulnerabilities have been resolved in the following Fedora CoreOS releases: - next: 44.20260510.1.3 - testing: 44.20260510.2.3 Since the fixed kernels are 7.0 kernels, a `stable` stream fix will be promoted when `testing` is promoted to `stable` next week. In the meantime, we recommend applying the mitigations below to `stable` stream nodes. == Fragnesia (CVE-2026-46300) == This vulnerability can be mitigated by disabling the affected kernel modules via the following Butane config snippet: storage: files: - path: /etc/modprobe.d/dirtyfrag.conf contents: inline: | install esp4 /bin/false install esp6 /bin/false install rxrpc /bin/false blacklist esp4 blacklist esp6 blacklist rxrpc alias net-pf-33 off alias xfrm-type-2-50 off alias xfrm-type-10-50 off or by creating the same file on already running systems. If the impacted modules are already loaded on the system then a reboot will be required and the functionality (IPsec and AFS) will be disabled. Otherwise, the mitigation will be effective immediately. == ssh-keysign-pwn (CVE-2026-46333) == This vulnerability can be mitigated by disabling ptrace access via the following Butane config snippet: storage: files: - path: /etc/sysctl.d/10-default-yama-scope.conf contents: inline: | kernel.yama.ptrace_scope = 3 or by creating the same file on already running systems and running: /usr/lib/systemd/systemd-sysctl 10-default-yama-scope.conf == Reference == For detailed information regarding these CVEs, see our tracking issues [1] [2]. Michael Armijo for The Fedora CoreOS Team [1] https://github.com/coreos/fedora-coreos-tracker/issues/2144 [2] https://github.com/coreos/fedora-coreos-tracker/issues/2147

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[Fedocal] Reminder meeting : Fedora CoreOS Group Weekly Meeting
by dusty＠dustymabe.com 19 May '26

19 May '26

Dear all, You are kindly invited to the meeting: Fedora CoreOS Group Weekly Meeting on 2026-05-20 from 15:30:00 to 16:30:00 UTC The meeting will be about: This is the meeting for the Fedora CoreOS Working Group. We typically go over previous meeting action items and then cover all tickets with the meeting keyword: https://github.com/coreos/fedora-coreos-tracker/labels/meeting. For how to run the meeting, see https://github.com/coreos/fedora-coreos-tracker#steps-to-run-the-meeting Location: https://matrix.to/#/#meeting-1:fedoraproject.org More Info: https://github.com/coreos/fedora-coreos-tracker#meetings Source: https://calendar.fedoraproject.org//meeting/9437/

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Fedora CoreOS Community Meeting Minutes 2026-05-14
by Yasmin de Souza 14 May '26

14 May '26

Minutes: https://meetbot-raw.fedoraproject.org//meeting-1_matrix_fedoraproject-org/2… Minutes (text): https://meetbot-raw.fedoraproject.org//meeting-1_matrix_fedoraproject-org/2… Log: https://meetbot.fedoraproject.org/meeting-1_matrix_fedoraproject-org/2026-0… ===================================== # #meeting-1:fedoraproject.org: fedora_coreos_meeting ===================================== Meeting started by @ydesouza:fedora.im at 2026-05-13 15:41:26 Meeting summary --------------- * TOPIC: roll call (@ydesouza:fedora.im, 15:42:44) * ACTION: Update FCOS Meeting Checklist to the right time info. (@ydesouza:fedora.im, 15:43:45) * TOPIC: Action items from last meeting (@ydesouza:fedora.im, 15:44:08) * INFO: there are no action items from the last meeting. (@ydesouza: fedora.im, 15:44:26) * TOPIC: Review Fedora 45 Release Schedule (@ydesouza:fedora.im, 15:44:59) * LINK: https://fedorapeople.org/groups/schedule/f-45/f-45-key-tasks.html (@ydesouza:fedora.im, 15:45:08) * TOPIC: No meeting topics found. (@ydesouza:fedora.im, 16:16:46) * TOPIC: Open Floor (@ydesouza:fedora.im, 16:16:54) * ACTION: Yasmin de Souza create a ticket to the tracker about kola-upgrade testing strategy discussion (@ydesouza:fedora.im, 16:28:24) Meeting ended at 2026-05-13 16:30:16 Action items ------------ * Update FCOS Meeting Checklist to the right time info. * Yasmin de Souza create a ticket to the tracker about kola-upgrade testing strategy discussion People Present (lines said) --------------------------- * @dustymabe:matrix.org (50) * @ydesouza:fedora.im (23) * @zodbot:fedora.im (15) * @jbtrystram:matrix.org (13) * @siosm:fedora.im (9) * @rapneset:matrix.org (3) * @jlebon:fedora.im (3) * @meetbot:fedora.im (2) * @apiaseck:matrix.org (2) * @cadejacobson:matrix.org (2) * @angelcr:matrix.org (2) * @peytonrobertson:matrix.org (2) * @nemric:relativit.fr (2) * @marmijo:fedora.im (2) * @hricky:fedora.im (1) * @cjp256:matrix.org (1) -- *Yasmin Valim de Souza* Associate Software Engineer, CoreOS Engineering Red Hat <https://www.redhat.com/> @redhat <https://twitter.com/redhat> @red-hat <https://www.linkedin.com/company/red-hat> @redhatinc <https://www.instagram.com/redhatinc> <https://www.redhat.com/> <https://redhat.com/options>

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[Fedocal] Reminder meeting : Fedora CoreOS Group Weekly Meeting
by dusty＠dustymabe.com 12 May '26

12 May '26

Dear all, You are kindly invited to the meeting: Fedora CoreOS Group Weekly Meeting on 2026-05-13 from 15:30:00 to 16:30:00 UTC The meeting will be about: This is the meeting for the Fedora CoreOS Working Group. We typically go over previous meeting action items and then cover all tickets with the meeting keyword: https://github.com/coreos/fedora-coreos-tracker/labels/meeting. For how to run the meeting, see https://github.com/coreos/fedora-coreos-tracker#steps-to-run-the-meeting Location: https://matrix.to/#/#meeting-1:fedoraproject.org More Info: https://github.com/coreos/fedora-coreos-tracker#meetings Source: https://calendar.fedoraproject.org//meeting/9437/

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Dirty Frag & Copy Fail 2 fixes for Fedora CoreOS
by Yasmin de Souza 12 May '26

12 May '26

The "Dirty Frag" and "Copy Fail 2" vulnerabilities [1 <https://github.com/coreos/fedora-coreos-tracker/issues/2142>] have been resolved in the latest Fedora CoreOS releases. We recommend updating your systems to one of the following versions: - stable: 44.20260419.3.1 (2026-05-11) - testing: 44.20260510.2.1 (2026-05-11) - next: 44.20260510.1.1 (2026-05-11) For detailed information regarding these CVEs check our issue [1 <https://github.com/coreos/fedora-coreos-tracker/issues/2142>]. The Fedora CoreOS Team [1] https://github.com/coreos/fedora-coreos-tracker/issues/2142 -- *Yasmin Valim de Souza* Associate Software Engineer, CoreOS Engineering Red Hat <https://www.redhat.com/> @redhat <https://twitter.com/redhat> @red-hat <https://www.linkedin.com/company/red-hat> @redhatinc <https://www.instagram.com/redhatinc> <https://www.redhat.com/> <https://redhat.com/options>

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Fedora CoreOS Community Meeting Minutes 2026-05-06
by Michael Armijo 07 May '26

07 May '26

Minutes: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Minutes (text): https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Log: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… ===================================== # #meeting-1:fedoraproject.org: fedora_coreos_meeting ===================================== Meeting started by @marmijo:fedora.im at 2026-05-06 15:30:10 Meeting summary --------------- * TOPIC: roll call (@marmijo:fedora.im, 15:30:15) * TOPIC: Action items from last meeting (@marmijo:fedora.im, 15:33:57) * INFO: There are no action items from the last meeting (@marmijo: fedora.im, 15:34:22) * TOPIC: Review Fedora 45 Release Schedule (@marmijo:fedora.im, 15:34:55) * LINK: https://fedorapeople.org/groups/schedule/f-45/f-45-key-tasks.html (@marmijo: fedora.im, 15:35:11) * INFO: Fedora 44 was released on 2026-04-28. From now, we'll start reviewing the F45 release schedule in this meeting (@marmijo:fedora.im, 15:35:53) * TOPIC: Meeting Agenda (@marmijo:fedora.im, 15:44:08) * INFO: There are no issues with the meeting label this week (@marmijo: fedora.im, 15:44:25) * TOPIC: Open Floor (@marmijo:fedora.im, 15:46:17) * TOPIC: Fedora 45 change considerations (@marmijo:fedora.im, 15:56:10) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2128 (@marmijo:fedora.im, 15:56:17) * LINK: https://fedoraproject.org/wiki/Changes/CMake_drop_install_vars (@marmijo:fedora.im, 15:58:42) * LINK: https://fedoraproject.org/wiki/Changes/OpenSSL40 (@marmijo: fedora.im, 16:04:36) * LINK: https://fedoraproject.org/wiki/Changes/Python3.15 (@marmijo: fedora.im, 16:10:16) * LINK: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org… (@dustymabe:matrix.org, 16:10:48) * INFO: update from maintainer on openssl 4.0 progress (@dustymabe: matrix.org, 16:10:48) * LINK: https://fedoraproject.org/wiki/Changes/ModernizeBootISO (@marmijo:fedora.im, 16:16:46) * LINK: https://fedoraproject.org/wiki/Changes/Lua5.5 (@marmijo: fedora.im, 16:18:16) * LINK: https://fedoraproject.org/wiki/Changes/Restrict_ptrace_by_default (@marmijo: fedora.im, 16:25:37) Meeting ended at 2026-05-06 16:32:11 Action items ------------ People Present (lines said) --------------------------- * @marmijo:fedora.im (57) * @dustymabe:matrix.org (30) * @zodbot:fedora.im (18) * @cadejacobson:matrix.org (4) * @rapneset:matrix.org (3) * @spresti:fedora.im (3) * @cjp256:matrix.org (2) * @meetbot:fedora.im (2) * @thilofm:matrix.org (2) * @jbtrystram:matrix.org (2) * @angelcr:matrix.org (1) * @hricky:fedora.im (1)

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Fedora CoreOS Community Meeting Minutes 2026-04-29
by Michael Armijo 06 May '26

06 May '26

Minutes: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Minutes (text): https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… Log: https://meetbot-raw.fedoraproject.org/meeting-1_matrix_fedoraproject-org/20… ===================================== # #meeting-1:fedoraproject.org: fedora_coreos_meeting ===================================== Meeting started by @marmijo:fedora.im at 2026-04-29 15:30:11 Meeting summary --------------- * TOPIC: roll call (@marmijo:fedora.im, 15:30:16) * TOPIC: Action items from last meeting (@marmijo:fedora.im, 15:34:03) * INFO: There are no action items from the last meeting. (@marmijo: fedora.im, 15:34:26) * TOPIC: Review Fedora 44 Release Schedule (@marmijo:fedora.im, 15:34:47) * LINK: https://fedorapeople.org/groups/schedule/f-44/f-44-key-tasks.html (@marmijo: fedora.im, 15:34:52) * INFO: Fedora 44 was released yesterday, 2026-04-28! 🎉 (@marmijo: fedora.im, 15:35:12) * LINK: https://github.com/coreos/fcos-meeting-action/issues/231 (@marmijo:fedora.im, 15:41:52) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/2055 (@marmijo:fedora.im, 15:42:12) * TOPIC: Meeting Agenda (@marmijo:fedora.im, 15:43:25) * INFO: There are no issues with the meeting label this week (@marmijo: fedora.im, 15:43:39) * TOPIC: systemd-oomd for Fedora CoreOS (@marmijo:fedora.im, 15:46:30) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/840 (@marmijo:fedora.im, 15:46:43) * INFO: This discussion is about both https://github.com/coreos/fedora-coreos-tracker/issues/840 and https://github.com/coreos/fedora-coreos-tracker/issues/859 (@marmijo: fedora.im, 15:54:45) * LINK: https://github.com/coreos/fedora-coreos-tracker/issues/859 (@marmijo:fedora.im, 15:54:49) * INFO: [proposed]: We will revert the accidental enablement of `systemd-oomd` for current releases. For Fedora 45, we will submit a formal Change Proposal to enable both `swap-on-zram` and `systemd-oomd` together to align with Fedora defaults while providing documented "best practices" or "things to consider" for Kubernetes node stability. (@marmijo:fedora.im, 16:18:11) * AGREED: We will revert the accidental enablement of `systemd-oomd` for current releases. For Fedora 45, we will submit a formal Change Proposal to enable both `swap-on-zram` and `systemd-oomd` together to align with Fedora defaults while providing documented "best practices" or "things to consider" for Kubernetes node stability. (@marmijo:fedora.im, 16:22:13) * INFO: We need a volunteer to write and own the Fedora 45 Change Proposal, and draft the K8s "best practices" documentation. (@marmijo: fedora.im, 16:24:56) * TOPIC: Open Floor (@marmijo:fedora.im, 16:26:13) Meeting ended at 2026-04-29 16:29:31 Action items ------------ People Present (lines said) --------------------------- * @marmijo:fedora.im (36) * @dustymabe:matrix.org (24) * @siosm:fedora.im (23) * @zodbot:fedora.im (10) * @nemric:relativit.fr (8) * @jbtrystram:matrix.org (5) * @meetbot:fedora.im (2) * @hricky:fedora.im (2) * @rapneset:matrix.org (2) * @jcapitao:matrix.org (2) * @cadejacobson:matrix.org (1) * @peytonrobertson:matrix.org (1) * @angelcr:matrix.org (1)

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CoreOS May 2026