Vulnerability identifier: #VU92911

Vulnerability risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48746

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the mlx5e_rep_bond_unslave(), mlx5e_rep_changelowerstate_event(), mlx5e_rep_changeupper_event() and mlx5e_rep_esw_bond_netevent() functions in drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/a01ee1b8165f4161459b5ec4e728bc7130fe8cd4
http://git.kernel.org/stable/c/fe70126da6063c29ca161cdec7ad1dae9af836b3
http://git.kernel.org/stable/c/4fad499d7fece448e7230d5e5b92f6d8a073e0bb
http://git.kernel.org/stable/c/ec41332e02bd0acf1f24206867bb6a02f5877a62

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.