CVE-2025-39829

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Source
https://cve.org/CVERecord?id=CVE-2025-39829
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39829.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-39829
Downstream
Related
Published
2025-09-16T13:00:27.154Z
Modified
2026-03-12T02:15:33.585667Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
trace/fgraph: Fix the warning caused by missing unregister notifier
Details

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

trace/fgraph: Fix the warning caused by missing unregister notifier

This warning was triggered during testing on v6.16:

notifier callback ftracesuspendnotifiercall already registered WARNING: CPU: 2 PID: 86 at kernel/notifier.c:23 notifierchainregister+0x44/0xb0 ... Call Trace: <TASK> blockingnotifierchainregister+0x34/0x60 registerftracegraph+0x330/0x410 ftraceprofilewrite+0x1e9/0x340 vfswrite+0xf8/0x420 ? filpflush+0x8a/0xa0 ? filpclose+0x1f/0x30 ? dodup2+0xaf/0x160 ksyswrite+0x65/0xe0 dosyscall64+0xa4/0x260 entrySYSCALL64after_hwframe+0x77/0x7f

When writing to the functionprofileenabled interface, the notifier was not unregistered after startgraphtracing failed, causing a warning the next time functionprofileenabled was written.

Fixed by adding unregisterpmnotifier in the exception path.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39829.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4a2b8dda3f8705880ec7408135645602d5590f51
Fixed
2a2deb9f8df70480050351ac27041f19bb9e718b
Fixed
000aa47a51233fd38a629b029478e0278e1e9fbe
Fixed
edede7a6dcd7435395cf757d053974aaab6ab1c2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39829.json"