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
Metrics
Affected Vendors & Products
References
History
Mon, 18 Nov 2024 21:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Linux
Linux linux Kernel |
|
Weaknesses | CWE-476 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* |
|
Vendors & Products |
Linux
Linux linux Kernel |
Fri, 08 Nov 2024 13:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
References |
| |
Metrics |
threat_severity
|
cvssV3_1
|
Thu, 07 Nov 2024 09:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | 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 | |
Title | net/mlx5e: Don't call cleanup on profile rollback failure | |
References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-11-07T09:31:23.123Z
Updated: 2024-12-19T09:34:07.200Z
Reserved: 2024-10-21T19:36:19.956Z
Link: CVE-2024-50146
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2024-11-07T10:15:06.443
Modified: 2024-11-18T21:17:20.177
Link: CVE-2024-50146
Redhat