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CVE-2025-39832

Description

In the Linux kernel, the following vulnerability has been resolved:net/mlx5: Fix lockdep assertion on sync reset unload eventFix lockdep assertion triggered during sync reset unload event. When thesync reset flow is initiated using the devlink reload fw_activateoption, the PF already holds the devlink lock while handling unloadevent. In this case, delegate sync reset unload event handling back tothe devlink callback process to avoid double-locking and resolve thelockdep warning.Kernel log:WARNING: CPU: 9 PID: 1578 at devl_assert_locked+0x31/0x40[...]Call Trace: 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

POC

Reference

No PoCs from references.

Github

- https://github.com/w4zu/Debian_security