NULL pointer dereference in Linux kernel core esw driver

1) NULL pointer dereference

EUVDB-ID: #VU97801

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2024-46857

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 mlx5_eswitch_set_vepa() and mlx5_eswitch_get_vepa() functions in drivers/net/ethernet/mellanox/mlx5/core/esw/legacy.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/52c4beb79e095e0631b5cac46ed48a2aefe51985
http://git.kernel.org/stable/c/65feee671e37f3b6eda0b6af28f204b5bcf7fa50
http://git.kernel.org/stable/c/505ae01f75f839b54329164bbfecf24cc1361b31
http://git.kernel.org/stable/c/b1d305abef4640af1b4f1b4774d513cd81b10cfc

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.