CVE-2024-50136

net/mlx5: Unregister notifier on eswitch init failure

State: Published
Severity: 5.5 Medium
Published: Nov 5, 2024
Updated: May 23, 2026
Reserved: Oct 21, 2024

Description

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

net/mlx5: Unregister notifier on eswitch init failure

It otherwise remains registered and a subsequent attempt at eswitch enabling might trigger warnings of the sort:

[ 682.589148] ------------[ cut here ]------------ [ 682.590204] notifier callback eswitch_vport_event [mlx5_core] already registered [ 682.590256] WARNING: CPU: 13 PID: 2660 at kernel/notifier.c:31 notifier_chain_register+0x3e/0x90 [...snipped] [ 682.610052] Call Trace: [ 682.610369] <TASK> [ 682.610663] ? __warn+0x7c/0x110 [ 682.611050] ? notifier_chain_register+0x3e/0x90 [ 682.611556] ? report_bug+0x148/0x170 [ 682.611977] ? handle_bug+0x36/0x70 [ 682.612384] ? exc_invalid_op+0x13/0x60 [ 682.612817] ? asm_exc_invalid_op+0x16/0x20 [ 682.613284] ? notifier_chain_register+0x3e/0x90 [ 682.613789] atomic_notifier_chain_register+0x25/0x40 [ 682.614322] mlx5_eswitch_enable_locked+0x1d4/0x3b0 [mlx5_core] [ 682.614965] mlx5_eswitch_enable+0xc9/0x100 [mlx5_core] [ 682.615551] mlx5_device_enable_sriov+0x25/0x340 [mlx5_core] [ 682.616170] mlx5_core_sriov_configure+0x50/0x170 [mlx5_core] [ 682.616789] sriov_numvfs_store+0xb0/0x1b0 [ 682.617248] kernfs_fop_write_iter+0x117/0x1a0 [ 682.617734] vfs_write+0x231/0x3f0 [ 682.618138] ksys_write+0x63/0xe0 [ 682.618536] do_syscall_64+0x4c/0x100 [ 682.618958] entry_SYSCALL_64_after_hwframe+0x4b/0x53

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0aa1e83a20f12e9eaad32f72212ebc7fe0c29c95 to before e58fb7ddbab6635191c26dea1af26b91cce00866Affected 7624e58a8b3a251e3e5108b32f2183b34453db32 to before 9f2ccb6f3888bec45c00121ee43e4e72423b12c1Affected 7624e58a8b3a251e3e5108b32f2183b34453db32 to before 599147722c5778c96292e2fbff4103abbdb45b1fAffected 7624e58a8b3a251e3e5108b32f2183b34453db32 to before 1da9cfd6c41c2e6bbe624d0568644e1521c33e12Affected dc426bd9d813aa5754ce35adaa6f97f0585c06fcAffected 6.1.60 to before 6.1.115Affected 6.5.9 to before 6.6Affected
LinuxLinux	6.6Affected before 6.6Not affected 6.1.115 through 6.1.Not affected 6.6.59 through 6.6.Not affected 6.11.6 through 6.11.*Not affected 6.12 and laterNot affected

Product

Versions

LinuxLinux

0aa1e83a20f12e9eaad32f72212ebc7fe0c29c95 to before e58fb7ddbab6635191c26dea1af26b91cce00866Affected
7624e58a8b3a251e3e5108b32f2183b34453db32 to before 9f2ccb6f3888bec45c00121ee43e4e72423b12c1Affected
7624e58a8b3a251e3e5108b32f2183b34453db32 to before 599147722c5778c96292e2fbff4103abbdb45b1fAffected
7624e58a8b3a251e3e5108b32f2183b34453db32 to before 1da9cfd6c41c2e6bbe624d0568644e1521c33e12Affected
dc426bd9d813aa5754ce35adaa6f97f0585c06fcAffected
6.1.60 to before 6.1.115Affected
6.5.9 to before 6.6Affected

LinuxLinux

6.6Affected
before 6.6Not affected
6.1.115 through 6.1.*Not affected
6.6.59 through 6.6.*Not affected
6.11.6 through 6.11.*Not affected
6.12 and laterNot affected

References

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