{"cve":"CVE-2025-21662","nvd":{"published":"2025-01-21T13:15:09.847","modified":"2026-06-17T08:43:57.613","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix variable not being completed when function returns\n\nWhen cmd_alloc_index(), fails cmd_work_handler() needs\nto complete ent->slotted before returning early.\nOtherwise the task which issued the command may hang:\n\n   mlx5_core 0000:01:00.0: cmd_work_handler:877:(pid 3880418): failed to allocate command entry\n   INFO: task kworker/13:2:4055883 blocked for more than 120 seconds.\n         Not tainted 4.19.90-25.44.v2101.ky10.aarch64 #1\n   \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n   kworker/13:2    D    0 4055883      2 0x00000228\n   Workqueue: events mlx5e_tx_dim_work [mlx5_core]\n   Call trace:\n      __switch_to+0xe8/0x150\n      __schedule+0x2a8/0x9b8\n      schedule+0x2c/0x88\n      schedule_timeout+0x204/0x478\n      wait_for_common+0x154/0x250\n      wait_for_completion+0x28/0x38\n      cmd_exec+0x7a0/0xa00 [mlx5_core]\n      mlx5_cmd_exec+0x54/0x80 [mlx5_core]\n      mlx5_core_modify_cq+0x6c/0x80 [mlx5_core]\n      mlx5_core_modify_cq_moderation+0xa0/0xb8 [mlx5_core]\n      mlx5e_tx_dim_work+0x54/0x68 [mlx5_core]\n      process_one_work+0x1b0/0x448\n      worker_thread+0x54/0x468\n      kthread+0x134/0x138\n      ret_from_fork+0x10/0x18","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/0e2909c6bec9048f49d0c8e16887c63b50b14647","https://git.kernel.org/stable/c/229cc10284373fbe754e623b7033dca7e7470ec8","https://git.kernel.org/stable/c/36124081f6ffd9dfaad48830bdf106bb82a9457d","https://git.kernel.org/stable/c/f0a2808767ac39f64b1d9a0ff865c255073cf3d4","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:58:41.599736885+00:00"},"epss":{"cve":"CVE-2025-21662","score":0.00203,"percentile":0.10291,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}