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Vulnerability · Published Sep 16, 2025 · Assigned by Linux

CVE-2025-39829trace/fgraph: Fix the warning caused by missing unregister notifier

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 91.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 ftrace_suspend_notifier_call already registered WARNING: CPU: 2 PID: 86 at kernel/notifier.c:23 notifier_chain_register+0x44/0xb0 ... Call Trace: <TASK> blocking_notifier_chain_register+0x34/0x60 register_ftrace_graph+0x330/0x410 ftrace_profile_write+0x1e9/0x340 vfs_write+0xf8/0x420 ? filp_flush+0x8a/0xa0 ? filp_close+0x1f/0x30 ? do_dup2+0xaf/0x160 ksys_write+0x65/0xe0 do_syscall_64+0xa4/0x260 entry_SYSCALL_64_after_hwframe+0x77/0x7f When writing to the function_profile_enabled interface, the notifier was not unregistered after start_graph_tracing failed, causing a warning the next time function_profile_enabled was written. Fixed by adding unregister_pm_notifier in the exception path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-39829
Debian:13linux6.12.48-1DEBIAN-CVE-2025-39829
Debian:14linux6.16.5-1DEBIAN-CVE-2025-39829
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux6.8.0-106.106USN-8095-1
Ubuntu:24.04:LTSlinux6.8.0-106.106UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-aws6.8.0-1050.53UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-aws6.8.0-1050.53USN-8095-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1050.53~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1050.53~22.04.1USN-8095-4
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure6.8.0-1051.57USN-8125-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2025-39829
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gcp6.8.0-1052.55UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gcp6.8.0-1052.55USN-8095-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1052.55~22.04.1USN-8095-1
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1052.55~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gke6.8.0-1048.53UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gke6.8.0-1048.53USN-8095-1
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1035.38UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1035.38USN-8095-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-106.106~22.04.1USN-8095-1
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-ibm6.8.0-1049.49USN-8095-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1049.49UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1049.49~22.04.1USN-8095-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1049.49~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-106.106.1UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-106.106.1USN-8095-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-106.106.1~22.04.1USN-8095-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-106.106.1~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1049.52USN-8100-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1049.52UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1049.52~22.04.1USN-8100-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1049.52~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1049.52.1UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1049.52.1USN-8100-1
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-oracle6.8.0-1047.48UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-oracle6.8.0-1047.48USN-8095-1
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1047.48~22.04.1USN-8095-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1047.48~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-raspi6.8.0-1050.54UBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-raspi6.8.0-1050.54USN-8095-5
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-106.106~22.04.1UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-39829
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1029.30USN-8261-1
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1028.29UBUNTU-CVE-2025-39829
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2025-39829

Affected products (as reported)

VendorProductVersions
Linux Linux 4a2b8dda3f8705880ec7408135645602d5590f51 – before 3cfa337c1adceda1632aefee4c3562440446ce514a2b8dda3f8705880ec7408135645602d5590f51 – before aa977309397fe2438801b1ca1ce7bc4106d8e9854a2b8dda3f8705880ec7408135645602d5590f51 – before 2a2deb9f8df70480050351ac27041f19bb9e718b4a2b8dda3f8705880ec7408135645602d5590f51 – before 000aa47a51233fd38a629b029478e0278e1e9fbe4a2b8dda3f8705880ec7408135645602d5590f51 – before edede7a6dcd7435395cf757d053974aaab6ab1c2
Linux Linux 2.6.30

References