AZL-71209
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-71209.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-71209
- Upstream
- Published
- 2025-09-16T13:16:03Z
- Modified
- 2026-04-01T05:20:44.441634Z
- Summary
- CVE-2025-39829 affecting package kernel 5.15.200.1-1
- 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.
- References