CVE-2025-39771

MEDIUM EPSS 2.1%
Published Sep 11, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 11, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: regulator: pca9450: Use devm_register_sys_off_handler With module test, there is error dump: ------------[ cut here ]------------ notifier callback pca9450_i2c_restart_handler already registered WARNING: kernel/notifier.c:23 at notifier_chain_register+0x5c/0x88, CPU#0: kworker/u16:3/50 Call trace: notifier_chain_register+0x5c/0x88 (P) atomic_notifier_chain_register+0x30/0x58 register_restart_handler+0x1c/0x28 pca9450_i2c_probe+0x418/0x538 i2c_device_probe+0x220/0x3d0 really_probe+0x114/0x410 __driver_probe_device+0xa0/0x150 driver_probe_device+0x40/0x114 __device_attach_driver+0xd4/0x12c So use devm_register_sys_off_handler to let kernel handle the resource free to avoid kernel dump.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.16  –  <6.16.4
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any

References 2

  • git.kernel.org https://git.kernel.org/stable/c/447be50598c05499f7ccc2b1f6ddb3da30f8099a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7a8c8aa0b0b2c62a0232bf868def85f3069ba7a7
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/447be50598c05499f7ccc2b1f6ddb3da30f8099a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7a8c8aa0b0b2c62a0232bf868def85f3069ba7a7
    Patch