CVE-2025-39832

Summary

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

net/mlx5: Fix lockdep assertion on sync reset unload event

Fix lockdep assertion triggered during sync reset unload event. When the sync reset flow is initiated using the devlink reload fw_activate option, the PF already holds the devlink lock while handling unload event. In this case, delegate sync reset unload event handling back to the devlink callback process to avoid double-locking and resolve the lockdep warning.

Kernel log: WARNING: CPU: 9 PID: 1578 at devl_assert_locked+0x31/0x40 […] Call Trace: <TASK> mlx5_unload_one_devl_locked+0x2c/0xc0 [mlx5_core] mlx5_sync_reset_unload_event+0xaf/0x2f0 [mlx5_core] process_one_work+0x222/0x640 worker_thread+0x199/0x350 kthread+0x10b/0x230 ? __pfx_worker_thread+0x10/0x10 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x8e/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK>

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7a9770f1bfeaeddf5afabd3244e2c4c4966be37d < ddac9d0fe2493dd550cbfc75eeaf31e9b6dac959affected
LinuxLinux7a9770f1bfeaeddf5afabd3244e2c4c4966be37d < 0c87dba9ccd3801d3b503f0b4fd41be343af4f06affected
LinuxLinux7a9770f1bfeaeddf5afabd3244e2c4c4966be37d < 06d897148e79638651800d851a69547b56b4be2eaffected
LinuxLinux7a9770f1bfeaeddf5afabd3244e2c4c4966be37d < 902a8bc23a24882200f57cadc270e15a2cfaf2bbaffected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.6.104 <= 6.6.*unaffected
LinuxLinux6.12.45 <= 6.12.*unaffected
LinuxLinux6.16.5 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References