{"cve":"CVE-2021-46931","nvd":{"published":"2024-02-27T10:15:07.690","modified":"2026-06-17T04:15:53.467","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Wrap the tx reporter dump callback to extract the sq\n\nFunction mlx5e_tx_reporter_dump_sq() casts its void * argument to struct\nmlx5e_txqsq *, but in TX-timeout-recovery flow the argument is actually\nof type struct mlx5e_tx_timeout_ctx *.\n\n mlx5_core 0000:08:00.1 enp8s0f1: TX timeout detected\n mlx5_core 0000:08:00.1 enp8s0f1: TX timeout on queue: 1, SQ: 0x11ec, CQ: 0x146d, SQ Cons: 0x0 SQ Prod: 0x1, usecs since last trans: 21565000\n BUG: stack guard page was hit at 0000000093f1a2de (stack is 00000000b66ea0dc..000000004d932dae)\n kernel stack overflow (page fault): 0000 [#1] SMP NOPTI\n CPU: 5 PID: 95 Comm: kworker/u20:1 Tainted: G W OE 5.13.0_mlnx #1\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n Workqueue: mlx5e mlx5e_tx_timeout_work [mlx5_core]\n RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180\n [mlx5_core]\n Call Trace:\n mlx5e_tx_reporter_dump+0x43/0x1c0 [mlx5_core]\n devlink_health_do_dump.part.91+0x71/0xd0\n devlink_health_report+0x157/0x1b0\n mlx5e_reporter_tx_timeout+0xb9/0xf0 [mlx5_core]\n ? mlx5e_tx_reporter_err_cqe_recover+0x1d0/0x1d0\n [mlx5_core]\n ? mlx5e_health_queue_dump+0xd0/0xd0 [mlx5_core]\n ? update_load_avg+0x19b/0x550\n ? set_next_entity+0x72/0x80\n ? pick_next_task_fair+0x227/0x340\n ? finish_task_switch+0xa2/0x280\n   mlx5e_tx_timeout_work+0x83/0xb0 [mlx5_core]\n   process_one_work+0x1de/0x3a0\n   worker_thread+0x2d/0x3c0\n ? process_one_work+0x3a0/0x3a0\n   kthread+0x115/0x130\n ? kthread_park+0x90/0x90\n   ret_from_fork+0x1f/0x30\n --[ end trace 51ccabea504edaff ]---\n RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180\n PKRU: 55555554\n Kernel panic - not syncing: Fatal exception\n Kernel Offset: disabled\n end Kernel panic - not syncing: Fatal exception\n\nTo fix this bug add a wrapper for mlx5e_tx_reporter_dump_sq() which\nextracts the sq from struct mlx5e_tx_timeout_ctx and set it as the\nTX-timeout-recovery flow dump callback.","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":["CWE-787"],"references":["https://git.kernel.org/stable/c/07f13d58a8ecc3baf9a488588fb38c5cb0db484f","https://git.kernel.org/stable/c/73665165b64a8f3c5b3534009a69be55bb744f05","https://git.kernel.org/stable/c/918fc3855a6507a200e9cf22c20be852c0982687","https://git.kernel.org/stable/c/07f13d58a8ecc3baf9a488588fb38c5cb0db484f","https://git.kernel.org/stable/c/73665165b64a8f3c5b3534009a69be55bb744f05"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2021-46931","score":0.00245,"percentile":0.15839,"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."]}