CVE-2025-40352 — platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init

Description

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

platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init

The lock-related debug logic (CONFIG_LOCK_STAT) in the kernel is noting
the following warning when the BlueField-3 SOC is booted:

BUG: key ffff00008a3402a8 has not been registered!
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 4 PID: 592 at kernel/locking/lockdep.c:4801 lockdep_init_map_type+0x1d4/0x2a0
<snip>
Call trace:
lockdep_init_map_type+0x1d4/0x2a0
__kernfs_create_file+0x84/0x140
sysfs_add_file_mode_ns+0xcc/0x1cc
internal_create_group+0x110/0x3d4
internal_create_groups.part.0+0x54/0xcc
sysfs_create_groups+0x24/0x40
device_add+0x6e8/0x93c
device_register+0x28/0x40
__hwmon_device_register+0x4b0/0x8a0
devm_hwmon_device_register_with_groups+0x7c/0xe0
mlxbf_pmc_probe+0x1e8/0x3e0 [mlxbf_pmc]
platform_probe+0x70/0x110

The mlxbf_pmc driver must call sysfs_attr_init() during the
initialization of the "count_clock" data structure to avoid
this warning.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	6.14	6.17.6

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	6.17.6-1	—

Ubuntu