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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2025-39832

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

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 7a9770f1bfeaeddf5afabd3244e2c4c4966be37d to < ddac9d0fe2493dd550cbfc75eeaf31e9b6dac959affected
  • 7a9770f1bfeaeddf5afabd3244e2c4c4966be37d to < 0c87dba9ccd3801d3b503f0b4fd41be343af4f06affected
  • 7a9770f1bfeaeddf5afabd3244e2c4c4966be37d to < 06d897148e79638651800d851a69547b56b4be2eaffected
  • 7a9770f1bfeaeddf5afabd3244e2c4c4966be37d to < 902a8bc23a24882200f57cadc270e15a2cfaf2bbaffected

Linux Linux

Default version status: affected

  • 6.5affected
  • 0 to < 6.5unaffected
  • 6.6.104 to ≤ 6.6.*unaffected
  • 6.12.45 to ≤ 6.12.*unaffected
  • 6.16.5 to ≤ 6.16.*unaffected
  • 6.17 to ≤ *unaffected

References