In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix crash passing ERR_PTR to kthread_stop()

event_test_stuff() calls kthread_run() and unconditionally passes the
returned task_struct pointer to kthread_stop(). kthread_run() returns an
error pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for
example under memory pressure during the boot-time event self-test.
kthread_stop() then dereferences the invalid pointer, crashing the kernel.

Check the result of kthread_run() before passing it to kthread_stop(). Use
WARN_ON() so that a failure to create the self-test thread does not go
unnoticed, matching the ring-buffer self-test fix in commit
91542863abad ("ring-buffer: Fix crash passing ERR_PTR to kthread_stop()").

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
e6187007d6c365b551c69ea3df46f06fd1c8bd19 affected < 12a499f741fc5be3731c8b0a0d909406575cc2eb
e6187007d6c365b551c69ea3df46f06fd1c8bd19 affected < adadf4192f700bca82abfda9fa6d58c0bf37cc04
e6187007d6c365b551c69ea3df46f06fd1c8bd19 affected < c40e0b4fa365969e67011529eabdfb66d1022256
e6187007d6c365b551c69ea3df46f06fd1c8bd19 affected < 649bc7df3e5d7be6f7996a95084037dbf3cad1e5
Linux Linux affected
Version Status Constraints
2.6.31 affected —
0 unaffected < 2.6.31
6.12.109 unaffected ≤ 6.12.*
6.18.50 unaffected ≤ 6.18.*
7.2.4 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

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Fixes

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb cve-icon cve-icon
https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5 cve-icon cve-icon
https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04 cve-icon cve-icon
https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256 cve-icon cve-icon
History

Sat, 12 Sep 2026 09:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
CWE-690

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERR_PTR to kthread_stop() event_test_stuff() calls kthread_run() and unconditionally passes the returned task_struct pointer to kthread_stop(). kthread_run() returns an error pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for example under memory pressure during the boot-time event self-test. kthread_stop() then dereferences the invalid pointer, crashing the kernel. Check the result of kthread_run() before passing it to kthread_stop(). Use WARN_ON() so that a failure to create the self-test thread does not go unnoticed, matching the ring-buffer self-test fix in commit 91542863abad ("ring-buffer: Fix crash passing ERR_PTR to kthread_stop()").
Title tracing: Fix crash passing ERR_PTR to kthread_stop()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:46:53.822Z

Reserved: 2026-09-11T19:38:34.762Z

Link: CVE-2026-89749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:20:05.757

Modified: 2026-09-11T20:20:05.757

Link: CVE-2026-89749

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-12T09:30:13Z

Weaknesses