NULL pointer dereference in Linux kernel mlx5 core driver



| Updated: 2025-05-10
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-53105
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU108453

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-53105

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 mlx5e_tc_esw_cleanup() function in drivers/net/ethernet/mellanox/mlx5/core/en_tc.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.3 rc6

CPE2.3 External links

https://git.kernel.org/stable/c/01fdaea410787fe372daeaeda93a29ed0606d334
https://git.kernel.org/stable/c/b7350f8dbe0c2a1d4d3ad7c35b610abd3cb91750
https://git.kernel.org/stable/c/c9668f0b1d28570327dbba189f2c61f6f9e43ae7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.21
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3


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.



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