Bug 2406202 (CVE-2025-40021) - CVE-2025-40021 kernel: tracing: dynevent: Add a missing lockdown check on dynevent
Summary: CVE-2025-40021 kernel: tracing: dynevent: Add a missing lockdown check on dyn...
Keywords:
Status: NEW
Alias: CVE-2025-40021
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-24 13:01 UTC by OSIDB Bzimport
Modified: 2025-10-24 13:46 UTC (History)
0 users

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Description OSIDB Bzimport 2025-10-24 13:01:29 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tracing: dynevent: Add a missing lockdown check on dynevent

Since dynamic_events interface on tracefs is compatible with
kprobe_events and uprobe_events, it should also check the lockdown
status and reject if it is set.
Comment 1 Keith Grant 2025-10-24 13:43:34 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102403-CVE-2025-40021-fbe1@gregkh/T
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