Bug 2467019 (CVE-2026-43074) - CVE-2026-43074 kernel: eventpoll: defer struct eventpoll free to RCU grace period
Summary: CVE-2026-43074 kernel: eventpoll: defer struct eventpoll free to RCU grace pe...
Keywords:
Status: NEW
Alias: CVE-2026-43074
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-06 10:03 UTC by OSIDB Bzimport
Modified: 2026-07-13 12:50 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:36186 0 None None None 2026-07-07 09:36:28 UTC
Red Hat Product Errata RHSA-2026:36541 0 None None None 2026-07-08 05:04:59 UTC
Red Hat Product Errata RHSA-2026:36645 0 None None None 2026-07-08 11:36:31 UTC
Red Hat Product Errata RHSA-2026:37729 0 None None None 2026-07-10 12:51:53 UTC
Red Hat Product Errata RHSA-2026:38902 0 None None None 2026-07-13 12:50:40 UTC

Description OSIDB Bzimport 2026-05-06 10:03:27 UTC 
In the Linux kernel, the following vulnerability has been resolved:

eventpoll: defer struct eventpoll free to RCU grace period

In certain situations, ep_free() in eventpoll.c will kfree the epi->ep
eventpoll struct while it still being used by another concurrent thread.
Defer the kfree() to an RCU callback to prevent UAF.
Comment 1 Alexander B 2026-05-06 13:29:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050601-CVE-2026-43074-ac01@gregkh/T
Comment 5 errata-xmlrpc 2026-07-07 09:36:27 UTC 
This issue has been addressed in the following products:

  NVIDIA for RHEL 10

Via RHSA-2026:36186 https://access.redhat.com/errata/RHSA-2026:36186
Comment 6 errata-xmlrpc 2026-07-08 05:04:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:36541 https://access.redhat.com/errata/RHSA-2026:36541
Comment 7 errata-xmlrpc 2026-07-08 11:36:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:36645 https://access.redhat.com/errata/RHSA-2026:36645
Comment 8 errata-xmlrpc 2026-07-10 12:51:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:37729 https://access.redhat.com/errata/RHSA-2026:37729
Comment 9 errata-xmlrpc 2026-07-13 12:50:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:38902 https://access.redhat.com/errata/RHSA-2026:38902
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