#VU94322 Input validation error in Linux kernel - CVE-2024-40940

Vulnerability identifier: #VU94322

Vulnerability 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-2024-40940

CWE-ID: CWE-20

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 improper input validation within the mlx5_lag_create_port_sel_table() function in drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.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

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External links
https://git.kernel.org/stable/c/531eab2da27dd42d68dfb841d82e987f4a6738b8
https://git.kernel.org/stable/c/d857df86837ac1c30592e8a068204d16feac9930
https://git.kernel.org/stable/c/a03a3fa12769e25f4385bee587afe1445aee7f7a
https://git.kernel.org/stable/c/229bedbf62b13af5aba6525ad10b62ad38d9ccb5

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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.