CVE-2025-21662

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/mlx5: Fix variable not being completed when function returns<br /> <br /> When cmd_alloc_index(), fails cmd_work_handler() needs<br /> to complete ent-&gt;slotted before returning early.<br /> Otherwise the task which issued the command may hang:<br /> <br /> mlx5_core 0000:01:00.0: cmd_work_handler:877:(pid 3880418): failed to allocate command entry<br /> INFO: task kworker/13:2:4055883 blocked for more than 120 seconds.<br /> Not tainted 4.19.90-25.44.v2101.ky10.aarch64 #1<br /> "echo 0 &gt; /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br /> kworker/13:2 D 0 4055883 2 0x00000228<br /> Workqueue: events mlx5e_tx_dim_work [mlx5_core]<br /> Call trace:<br /> __switch_to+0xe8/0x150<br /> __schedule+0x2a8/0x9b8<br /> schedule+0x2c/0x88<br /> schedule_timeout+0x204/0x478<br /> wait_for_common+0x154/0x250<br /> wait_for_completion+0x28/0x38<br /> cmd_exec+0x7a0/0xa00 [mlx5_core]<br /> mlx5_cmd_exec+0x54/0x80 [mlx5_core]<br /> mlx5_core_modify_cq+0x6c/0x80 [mlx5_core]<br /> mlx5_core_modify_cq_moderation+0xa0/0xb8 [mlx5_core]<br /> mlx5e_tx_dim_work+0x54/0x68 [mlx5_core]<br /> process_one_work+0x1b0/0x448<br /> worker_thread+0x54/0x468<br /> kthread+0x134/0x138<br /> ret_from_fork+0x10/0x18