---
id: CVE-2024-50146
title: 'net/mlx5e: Don''t call cleanup on profile rollback failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/mlx5e: Don't call cleanup on profile rollback failure

  When profile rollback fails in mlx5e_netdev_change_profile, the netdev
  profile var is left set to NULL. Avoid…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 <
    db84cb4c8c565e6d4de84b23c2818b63991adfdd
  - >-
    Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 <
    d6fe973c8873c998734a050f366b28facc03d32a
  - >-
    Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 <
    3955b77494c3c7d14873b1db67e7e00c46a714db
  - >-
    Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 <
    4dbc1d1a9f39c3711ad2a40addca04d07d9ab5d0
  - Linux 5.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:27:48.813889Z'
published: '2024-11-07'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:22.161Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-50146'
references:
  - url: 'https://git.kernel.org/stable/c/db84cb4c8c565e6d4de84b23c2818b63991adfdd'
  - url: 'https://git.kernel.org/stable/c/d6fe973c8873c998734a050f366b28facc03d32a'
  - url: 'https://git.kernel.org/stable/c/3955b77494c3c7d14873b1db67e7e00c46a714db'
  - url: 'https://git.kernel.org/stable/c/4dbc1d1a9f39c3711ad2a40addca04d07d9ab5d0'
tags:
  - cve.org
epss: 0.00231
epssPercentile: 0.14029
ingestedAt: '2026-11-05T22:38:31.828Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: Don't call cleanup on profile rollback failure

When profile rollback fails in mlx5e_netdev_change_profile, the netdev
profile var is left set to NULL. Avoid a crash when unloading the driver
by not calling profile->cleanup in such a case.

This was encountered while testing, with the original trigger that
the wq rescuer thread creation got interrupted (presumably due to
Ctrl+C-ing modprobe), which gets converted to ENOMEM (-12) by
mlx5e_priv_init, the profile rollback also fails for the same reason
(signal still active) so the profile is left as NULL, leading to a crash
later in _mlx5e_remove.

 [  732.473932] mlx5_core 0000:08:00.1: E-Switch: Unload vfs: mode(OFFLOADS), nvfs(2), necvfs(0), active vports(2)
 [  734.525513] workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR
 [  734.557372] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init failed, err=-12
 [  734.559187] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: new profile init failed, -12
 [  734.560153] workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR
 [  734.589378] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init failed, err=-12
 [  734.591136] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12
 [  745.537492] BUG: kernel NULL pointer dereference, address: 0000000000000008
 [  745.538222] #PF: supervisor read access in kernel mode
<snipped>
 [  745.551290] Call Trace:
 [  745.551590]  <TASK>
 [  745.551866]  ? __die+0x20/0x60
 [  745.552218]  ? page_fault_oops+0x150/0x400
 [  745.555307]  ? exc_page_fault+0x79/0x240
 [  745.555729]  ? asm_exc_page_fault+0x22/0x30
 [  745.556166]  ? mlx5e_remove+0x6b/0xb0 [mlx5_core]
 [  745.556698]  auxiliary_bus_remove+0x18/0x30
 [  745.557134]  device_release_driver_internal+0x1df/0x240
 [  745.557654]  bus_remove_device+0xd7/0x140
 [  745.558075]  device_del+0x15b/0x3c0
 [  745.558456]  mlx5_rescan_drivers_locked.part.0+0xb1/0x2f0 [mlx5_core]
 [  745.559112]  mlx5_unregister_device+0x34/0x50 [mlx5_core]
 [  745.559686]  mlx5_uninit_one+0x46/0xf0 [mlx5_core]
 [  745.560203]  remove_one+0x4e/0xd0 [mlx5_core]
 [  745.560694]  pci_device_remove+0x39/0xa0
 [  745.561112]  device_release_driver_internal+0x1df/0x240
 [  745.561631]  driver_detach+0x47/0x90
 [  745.562022]  bus_remove_driver+0x84/0x100
 [  745.562444]  pci_unregister_driver+0x3b/0x90
 [  745.562890]  mlx5_cleanup+0xc/0x1b [mlx5_core]
 [  745.563415]  __x64_sys_delete_module+0x14d/0x2f0
 [  745.563886]  ? kmem_cache_free+0x1b0/0x460
 [  745.564313]  ? lockdep_hardirqs_on_prepare+0xe2/0x190
 [  745.564825]  do_syscall_64+0x6d/0x140
 [  745.565223]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
 [  745.565725] RIP: 0033:0x7f1579b1288b

## Affected

- `Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 < db84cb4c8c565e6d4de84b23c2818b63991adfdd`
- `Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 < d6fe973c8873c998734a050f366b28facc03d32a`
- `Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 < 3955b77494c3c7d14873b1db67e7e00c46a714db`
- `Linux >= 3ef14e463f6ed0218710f56b97e1a7d0448784d2 < 4dbc1d1a9f39c3711ad2a40addca04d07d9ab5d0`
- `Linux 5.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.